Development Custom themes

Overview

If your service has its own brand you can create a custom theme and include your own brand assets.

Using a custom colour palette

The ONS Design System uses CSS Custom Properties (opens in a new tab) (also known as CSS variables) for the colour palette. It allows services to create a custom theme by overiding the custom properties in their own stylesheets. The custom properties for colours can be found in the colours scss file in the design system GitHub repo (opens in a new tab) (src/scss/vars/_colors.scss)

Before creating your theme, check the accessibility requirements for colour contrast.

You can check if a colour combination meets WCAG 2.1 AA requirements by using WebAim’s colour contrast checker (opens in a new tab)

Referencing a custom CSS file

To create a theme, you need a CSS file with a :root CSS pseudo-class which overrides colours. This file needs to be referenced after our main.css file in the <head> of your application.

You can add your stylesheet reference inside the head block if you’re using the base page template.

Example

This example shows the custom properties that are overridden to create the Census 2021 theme.

:root {
  --ons-color-branded: #902082;
  --ons-color-branded-tint: rgba(144, 32, 130, 0.1); // 10% of brand colour
  --ons-color-branded-secondary: #df0667;
  --ons-color-branded-tertiary: #3c388e;
  --ons-color-branded-supporting: #00a3a6;
  --ons-color-branded-supporting-tint: rgba(0, 163, 166, 0.2);
  --ons-color-text-link-hover: var(--ons-color-black);
}

Overriding the css properties as shown above will add your custom colour palette to a range of components such as the header, panel and hero.

Theming the header

To make it easier to theme the header of your your service, the header component has two modes available; default and neutral.

Default header

The default header is suited to a dark background with white text and elements provided.

Open this example in a new tab(Example Header External With Navigation)

Example Header External With Navigation contents

Nunjucksfor Example Header External With Navigation
Nunjucks macro optionsfor Example Header External With Navigation
HTMLfor Example Header External With Navigation

Nunjucks

{% from "components/header/_macro.njk" import onsHeader %}

{{
    onsHeader({
        "title": 'Design system',
        "titleUrl": '#0',
        "navigation": {
            "id": 'main-nav',
            "ariaLabel": 'Main menu',
            "currentPath": '#home',
            "itemsList": [
                {
                    "text": 'Home',
                    "url": '#home'
                },
                {
                    "text": 'Guidance',
                    "url": '#0'
                },
                {
                    "text": 'Foundations',
                    "url": '#0'
                },
                {
                    "text": 'Components',
                    "url": '#0'
                },
                {
                    "text": 'Patterns',
                    "url": '#0'
                }
            ],
            "toggleNavigationButton": {
                "text": 'Menu',
                "ariaLabel": 'Toggle main menu'
            }
        }
    })
}}

Nunjucks macro options

Name	Type	Required	Description
phase	`PhaseBanner` (ref)	false	Settings to set the Phase banner component within the HTML `<header>` element
wide	boolean	false	Set to “true” to increase the maximum width of the layout container to 1280px
fullWidth	boolean	false	Set to “true” to increase the maximum width of the layout container to the full width of the viewport
classes	string	false	Classes to add to the wrapping `header`
variants	array or string	false	An array of values or single value (string) to adjust the component using available variants: “internal”, "neutral", “description” and "basic"
mastheadLogoUrl	string	false	Wraps the masthead logo in a link. Set the URL for the HTML `href` attribute for the link.
mastheadLogo	object`<MastheadLogo>`	false	Settings for a custom organisation logo in the masthead. Defaults to the ONS logo.
mastheadLogoAltText	string	false	Optional logo alt text override (defaults to 'Office for National Statistics logo')
language	object`<Language>`	false	Settings for the language selector
serviceLinks	object`<ServiceLinks>`	false	Settings for the service links in the masthead
title	string	true (unless `titleLogo` is set or variant is set to basic)	The title for the service
description	string	false	Tagline or description for the service
titleAsH1	boolean	false	Override to wrap the header `title` in an `<h1>` heading
titleLogo	object`<TitleLogo>`	false	Settings for a custom title logo in the header.
titleUrl	string	false	Wraps the title logo in a link. Set the URL for the HTML `href` attribute for the link.
button	object`<SignOutButton>`	false	Settings for the sign out button in the header used to exit a transactional service
navigation	array`<Navigation>`	false	Settings for the main menu links
siteSearchAutosuggest	`Autosuggest` (ref)	false	Sets the autosuggest functionality in the header
menuLinks	object`<MenuLinks>`	false	Settings for the menu button navigation in the masthead
searchLinks	object`<SearchLinks>`	false	Settings for the search button navigation in the masthead

MastheadLogo
Name	Type	Required	Description
classes	string	false	Classes to be added to the masthead logo
large	string	false	HTML to render an image for example embedded `<svg>` or `<img>`
small	string	false	Optionally provide a version of the logo more suited to mobile viewports
multipleLogos	object`<MultipleLogos>`	false	Allows for up to three logos to be used in the masthead

MultipleLogos
Name	Type	Required	Description
logo1	object`<Logo>`	true	First Logo
logo2	object`<Logo>`	false	Second Logo
logo3	object`<Logo>`	false	Third Logo

Logo
Name	Type	Required	Description
image	string	false	HTML to render an image for example embedded `<svg>` or `<img>`. Use 'ONS Logo' for the default ONS icon.
url	string	false	Wraps the masthead logo in a link. Set the URL for the HTML `href` attribute for the link.

TitleLogo
Name	Type	Required	Description
classes	string	false	Classes to be added to the masthead logo
large	string	true	HTML to render an image for example embedded `<svg>` or `<img>`
small	string	false	Optionally provide a version of the logo more suited to mobile viewports

ServiceLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu toggle button displayed on small viewports.
classes	string	false	Classes to add to the `<nav>` element
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Service links navigation”.
ariaListLabel	string	false	The `aria-label` attribute added to the `<ul>` element. Defaults to “Service links”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
toggleServicesButton	object`<ToggleButton>`	true	Settings for the mobile service links toggle button

MenuLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu toggle button displayed on small viewports.
classes	string	false	Classes to add to the `<nav>` element
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Menu links navigation”.
ariaListLabel	string	false	The `aria-label` attribute added to the `<ul>` element. Defaults to “Menu links”.
keyLinks	array`<KeyLink>`	true	Settings for an array of key list items
columns	array`<Column>`	true	Settings for list of columns that contain menu links
toggleMenuButton	object`<ToggleButton>`	true	Settings for the menu toggle button

SearchLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `search button` element. Used for the `aria-controls` attribute for the search toggle button displayed on small viewports.
classes	string	false	Classes to add to the `search button` element
searchNavigationAriaLabel	string	false	The `aria-label` attribute added to the `search navigation` element. Defaults to Search navigation”.
searchNavigationButtonAriaLabel	string	false	The `aria-label` attribute added to the `search navigation` button toggle element on mobile. Defaults to "Toggle search".
searchNavigationInputLabel	string	false	Optional override for the search input label. Defaults to "Search the ONS".
searchNavigationButtonText	string	false	Optional override for the search text of the `search navigation` element. Defaults to "Search"
searchButtonAriaLabel	string	false	The `aria-label` attribute added to the `search button` element. Defaults to "Toggle search".
heading	string	true	The heading label for the search items list
itemsList	array`<SearchItem>`	true	Settings for an array of searches associated with each search link. The list can contain a maximum of 5 items.

SearchItem
Name	Type	Required	Description
text	string	true	The text for the search item.
url	string	true	The URL for the search item

Language
Name	Type	Required	Description
languages	array`<languages>`	true	Settings for an array of language toggle links

Languages
Name	Type	Required	Description
url	string	true	URL to change the application language
isoCode	string	true	The ISO language code for the language
text	string	true	The name of the language to display
abbrText	string	false	Abbreviated version of the language text can be provided. This will be displayed on small viewports
current	boolean	true	The current selected language
attributes	object	false	HTML attributes (for example, data attributes) to add to the details element

Navigation
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu button displayed on small viewports.
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Main menu”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
currentPath	string or array`<string>`	true	The path of the current active page. Multiple paths can be provided using an array to highlight nested navigation.
toggleNavigationButton	array`<ToggleButton>`	true	Settings for the navigation menu toggle button displayed on small viewports
removeHorizontalSubNav	boolean	false	Set to “true” to remove the sub navigation
subNavigation	array`<subNavigation>`	false	Settings for the sub navigation menu links

ToggleButton
Name	Type	Required	Description
text	string	false	The text for the toggle button label. Defaults to “Menu”
ariaLabel	string	false	The `aria-label` attribute for the toggle button. Defaults to “Toggle menu”

Item
Name	Type	Required	Description
classes	string	false	Classes to add to the list item element
url	string	true	The URL for the HTML `href` attribute for the path to the linked page
text	string	true	The text label for the link
id	string	false	The HTML `id` of the link
ariaLabel	string	false	The `aria-label` for the item.
title	string	false	The title text for the list item element
iconType	string	false	Adds an icon to a service link item when set to the name of one of the available icons. This is not compatible with navigation links.

SignOutButton
Name	Type	Required	Description
text	string	true	Text for the button
name	string	false	Sets the HTML `name` attribute for the `<button>`. Not valid if `url` is set.
url	string	false	If set, will create an HTML anchor link with the required classes and attributes
attributes	object	false	HTML attributes (for example, data attributes) to add to the button

SubNavigation
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu button displayed on small viewports.
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Section menu”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
currentPath	string or array`<string>`	true	The path of the current active page. Multiple paths can be provided using an array to highlight nested navigation.
removeHorizontalSubNav	boolean	false	Set to “true” to remove the sub navigation

KeyLink
Name	Type	Required	Description
heading	string	true	The heading for the link
url	string	false	The URL for the HTML `href` attribute for the path to the linked page
description	string	true	The description label for the link

Column
Name	Type	Required	Description
groups	array`<group>`	true	settings for array of groups in column

Group
Name	Type	Required	Description
heading	string	true	The heading label for the menu group
url	string	false	The URL for the HTML `href` attribute for the path to the linked page
groupItems	array`<groupItem>`	false	Settings for an array of group items for each list item

GroupItem
Name	Type	Required	Description
text	string	true	The text label for the group-item
url	string	false	The URL for the HTML `href` attribute for the path to the linked page

HTML

<header class="ons-header">
  <div class="ons-browser-banner">
    <div class="ons-container">
      <p class="ons-browser-banner__content">
        <span class="ons-browser-banner__lead">This website no longer supports your browser.</span><span
          class="ons-browser-banner__cta"> You can <a class="ons-browser-banner__link"
            href="https://www.ons.gov.uk/help/browsers">upgrade your browser to the latest version</a>.</span>
      </p>
    </div>
  </div>
  <div class="ons-header__top">
    <div class="ons-container">
      <div
        class="ons-header__grid-top ons-grid ons-grid-flex ons-grid-flex--between ons-grid-flex--vertical-center ons-grid-flex--no-wrap ons-grid--gutterless">
        <div class="ons-grid__col ons-col-auto">
          <div class="ons-header__org-logo ons-header__org-logo--large">
            <svg class="ons-icon--logo" xmlns="http://www.w3.org/2000/svg" width="250" height="24" viewBox="33 2 552 60"
              aria-labelledby="ons-logo-en-alt" role="img">
              <title id="ons-logo-en-alt"> Office for National Statistics logo </title>
              <g class="ons-icon--logo__group ons-icon--logo__group--secondary" fill="#a8bd3a">
                <path
                  d="M0,34.6c.8-1.69,1.39-3,2.32-4.6A38.28,38.28,0,0,1,0,23.4V34.6M5,3S0,3,0,9.25v1A62.12,62.12,0,0,0,4.2,27a43.77,43.77,0,0,1,9.42-10.79C21.69,9.21,31.16,5.13,45.9,3Z" />
              </g>
              <g class="ons-icon--logo__group ons-icon--logo__group--primary" fill="#003c57">
                <path
                  d="M53.06,6.42C36.2,8,24.68,12.92,16.43,20.07A41.46,41.46,0,0,0,6.4,32.2C12.87,44.93,28.88,57,46.6,57H47s6.32.21,6.32-6.91V6.36a1.22,1.22,0,0,1-.26.06M9.72,42.67a44.25,44.25,0,0,1-5-7.42A80.59,80.59,0,0,0,0,46.38V56.91L31.06,57c-9.83-3-15.74-7.64-21.34-14.3" />
              </g>
              <g class="ons-icon--logo__group ons-icon--logo__group--text" fill="#003c57">
                <path
                  d="M82,47.49c-9.07,0-13.13-7.51-13.13-16.77S72.91,14,82,14s13.1,7.61,13.1,16.77S91.1,47.54,82,47.54m0-30.91c-6.69,0-9.07,7.33-9.07,14.05s2.16,13.9,9.07,13.9,9-7.28,9-13.9-2.34-14-9-14" />
                <path
                  d="M106.36,23.81V46.88h-3.67V23.81H98.93V21.56h3.76V17.9c0-4.61,2.72-7.95,8.08-7.95.38,0,.86.05.86.05v2.35h-.43c-2.55,0-4.84,1.64-4.84,5.12v4.09h5.27v2.25Z" />
                <path
                  d="M121.53,23.81V46.88h-3.67V23.81H114.1V21.56h3.76V17.9c0-4.61,2.72-7.95,8.08-7.95.38,0,.86.05.86.05v2.35h-.43c-2.55,0-4.84,1.64-4.84,5.12v4.09h5.27v2.25Z" />
                <path
                  d="M132.85,16.72a2.28,2.28,0,0,1-2.33-2.23v0a2.34,2.34,0,0,1,4.67,0,2.28,2.28,0,0,1-2.3,2.26h0M131,21.56h3.71V46.88H131Z" />
                <path
                  d="M150.53,47.49c-6,0-10.63-5.16-10.63-13.29S144.52,21,150.66,21a9.76,9.76,0,0,1,6.17,1.74l-1,2.25a7.53,7.53,0,0,0-4.4-1.36c-5.15,0-7.78,4.46-7.78,10.48,0,6.2,3,10.62,7.65,10.62a8,8,0,0,0,4.49-1.37l1,2.45a10.21,10.21,0,0,1-6.3,1.73" />
                <path
                  d="M162.84,35.75c.48,6,3.76,9,8.9,9a14.66,14.66,0,0,0,6.88-1.55l1.08,2.59a18,18,0,0,1-8.22,1.73c-7.12,0-12.18-4.23-12.18-13.34,0-8.69,4.67-13.2,11-13.2s10.37,3.95,10.37,12.4Zm7.35-12.41c-4.1,0-7.56,3.2-7.52,10.29l14.39-2c0-5.87-2.81-8.32-6.87-8.32" />
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                  d="M403.18,47.79c-7.43,0-10.94-3-10.94-7.81,0-6.8,7.13-8.64,15.6-9.39V29.13c0-3.47-2.37-4.51-5.83-4.51a18,18,0,0,0-6.87,1.46L393.89,23A24,24,0,0,1,403,21.15c5.62,0,9.94,2.3,9.94,8.78V46a22.71,22.71,0,0,1-9.76,1.83m4.66-14.67c-6.27.67-10.46,1.84-10.46,6.73,0,3.42,2.43,4.88,6.23,4.88a10.09,10.09,0,0,0,4.23-.84Z" />
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                  points="418.52 47.13 418.52 34.91 418.52 10.25 423.92 10.25 423.92 22.76 423.92 47.13 418.52 47.13" />
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                  d="M536.19,47.79A15.9,15.9,0,0,1,528.54,46L530,42.48a10.53,10.53,0,0,0,5.52,1.5c2.77,0,5-1.78,5-3.94,0-6-11.1-3.2-11.1-11.47,0-3.76,3.37-7.42,8.86-7.42A13.56,13.56,0,0,1,545.34,23l-1.42,3.14a8.47,8.47,0,0,0-4.62-1.45c-2.81,0-4.54,1.69-4.54,3.62,0,5.64,11.32,3.14,11.32,11.6,0,4-3.85,7.9-9.89,7.9" />
                <path
                  d="M559.83,47.69c-5.31,0-7.35-3.43-7.35-6.86V25.09h-3.54V21.81h3.54V16.12l5.4-1.5v7.19h4.93v3.28h-4.93V40.55a3.27,3.27,0,0,0,3,3.52h.48a5.64,5.64,0,0,0,1.47-.23v3.33a7.72,7.72,0,0,1-3,.52" />
                <path
                  d="M569.77,17.43a3,3,0,0,1-3.15-2.81,3.17,3.17,0,0,1,6.31,0,3,3,0,0,1-3.16,2.81m-2.72,4.38h5.44V47.13h-5.44Z" />
                <path
                  d="M588.14,47.79c-6.23,0-11-5.08-11-13.35s4.88-13.29,11-13.29A10.51,10.51,0,0,1,594.66,23l-1.21,3a6.87,6.87,0,0,0-4-1.22c-4.4,0-6.69,3.81-6.69,9.49s2.63,9.59,6.61,9.59a6.74,6.74,0,0,0,4-1.28L594.7,46c-1.12.94-3.33,1.84-6.56,1.84" />
                <path
                  d="M605.1,47.79A15.9,15.9,0,0,1,597.45,46l1.42-3.47A10.54,10.54,0,0,0,604.4,44c2.77,0,5-1.78,5-3.94,0-6-11.1-3.2-11.1-11.47,0-3.76,3.37-7.42,8.85-7.42a13.49,13.49,0,0,1,7.1,1.83l-1.42,3.14a8.42,8.42,0,0,0-4.63-1.45c-2.8,0-4.53,1.69-4.53,3.62,0,5.64,11.32,3.14,11.32,11.6,0,4-3.85,7.9-9.89,7.9" />
              </g>
            </svg>
          </div>
          <div class="ons-header__org-logo ons-header__org-logo--small">
            <svg class="ons-icon--logo" xmlns="http://www.w3.org/2000/svg" width="120" height="27" viewBox="0 5 595 116"
              aria-labelledby="ons-logo-stacked-en-alt" role="img">
              <title id="ons-logo-stacked-en-alt"> Office for National Statistics logo </title>
              <g class="ons-icon--logo__group ons-icon--logo__group--secondary" fill="#a8bd3a">
                <path
                  d="M0,70.5c1.8-3.7,3.6-7.2,5.6-10.7A127.94,127.94,0,0,1,0,42.6V70.5M10.9,0S0,0,0,13.5v7.2A128.06,128.06,0,0,0,7.9,56.2a114.75,114.75,0,0,1,22.3-26C47.8,15.1,71.5,4.7,103.7.1Z" />
              </g>
              <g class="ons-icon--logo__group ons-icon--logo__group--primary" fill="#003c57">
                <path
                  d="M115.9,7.3c-36.8,3.5-62,14-80,29.4a108.15,108.15,0,0,0-23.6,29c14.1,27.4,41.1,47.6,86,50.5h4.4s13.8.5,13.8-14.9V7.2l-.6.1M21.2,85.4a92.68,92.68,0,0,1-11-16A173,173,0,0,0,0,93.4v22.7l73.6.1c-22.9-5.5-40.1-16.4-52.4-30.8" />
              </g>
              <g class="ons-icon--logo__group ons-icon--logo__group--text" fill="#003c57">
                <path
                  d="M161,51.9c-11.3,0-16.3-9.3-16.3-20.8s5-20.8,16.3-20.8,16.3,9.5,16.3,20.8c-.1,11.5-5.1,20.8-16.3,20.8m0-38.3c-8.3,0-11.3,9.1-11.3,17.4s2.7,17.3,11.3,17.3,11.2-9.1,11.2-17.3S169.3,13.6,161,13.6m30.2,8.9V51.2h-4.5V22.6H182V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8l-6.7-.1Zm18.9,0V51.2h-4.5V22.6h-4.7V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8l-6.7-.1Zm14-8.8a2.82,2.82,0,0,1-2.9-2.8,2.9,2.9,0,0,1,5.8,0,2.76,2.76,0,0,1-2.9,2.8m-2.3,6h4.6V51.2h-4.6Zm24.3,32.2c-7.4,0-13.2-6.4-13.2-16.5,0-10.3,5.8-16.5,13.4-16.5a12.36,12.36,0,0,1,7.7,2.2l-1.2,2.8a8.92,8.92,0,0,0-5.5-1.7c-6.4,0-9.7,5.5-9.7,13,0,7.7,3.7,13.2,9.5,13.2a9.8,9.8,0,0,0,5.6-1.7l1.2,3c-1.3,1.2-4,2.2-7.8,2.2m15.3-14.6c.6,7.4,4.7,11.1,11.1,11.1a18.36,18.36,0,0,0,8.5-1.9l1.3,3.2a22.58,22.58,0,0,1-10.2,2.1c-8.8,0-15.1-5.3-15.1-16.6,0-10.8,5.8-16.4,13.7-16.4s12.9,4.9,12.9,15.4l-22.2,3.1ZM270.5,22c-5.1,0-9.4,4-9.3,12.8l17.9-2.5C279,25,275.5,22,270.5,22m42.2.5V51.2h-4.5V22.6h-4.7V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8Zm23.2,29.4c-9.3,0-13.5-7.2-13.5-16.5s4.2-16.5,13.5-16.5,13.5,7.2,13.5,16.5-4.2,16.5-13.5,16.5m0-29.8c-6.9,0-8.8,7-8.8,13.4s2.1,13.1,8.8,13.1c6.9,0,8.9-6.6,8.9-13.1s-2-13.4-8.9-13.4m33.3.6c-2.9-.8-7.1-.6-9.1.6V51.2h-4.6V21.1c3.3-1.4,6.6-2.2,12.5-2.2h2.4c0,.1-1.2,3.8-1.2,3.8ZM171.3,114.8,153.5,87.3c-1.3-2.1-2.3-4.1-2.3-4.1h-.1s.2,2.3.2,4.8v26.8h-5.8V74.7h6.6L169,100.5a46.13,46.13,0,0,1,2.4,4.1h.1s-.2-2.3-.2-4.7V74.6h5.9v40.1l-5.9.1Zm25,.8c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.8-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8l-1.6-3.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.7,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm24.5,18.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2c0,2.5,1.4,4.4,4.3,4.4a5.66,5.66,0,0,0,1.8-.3v4.1a11.47,11.47,0,0,1-3.7.6M239,77.9a3.52,3.52,0,1,1,3.9-3.5,3.71,3.71,0,0,1-3.9,3.5m-3.4,5.5h6.8v31.4h-6.8Zm26.9,32.2c-9.6,0-14.4-7.1-14.4-16.5s4.8-16.6,14.4-16.6,14.3,7.2,14.3,16.6-4.7,16.5-14.3,16.5m0-28.7c-5.8,0-7.5,6.1-7.5,12.2s1.8,11.9,7.5,11.9,7.5-5.8,7.5-11.9-1.7-12.2-7.5-12.2m39.3,27.9V92.3c0-4-3.4-5.5-7.3-5.5a16,16,0,0,0-5.4.9v27.1h-6.7v-30a32.8,32.8,0,0,1,12.5-2.3c8.2,0,13.7,2.8,13.7,9.7v22.6Zm25.7.8c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.9-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8L316,84.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.7,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm13.2,17.4V69h6.7v45.8Zm38.6.8a23.94,23.94,0,0,1-10.9-2.3l1.9-4.9a17,17,0,0,0,7.7,1.9c4.7,0,8-2.7,8-6.7,0-8.8-16.7-5.4-16.7-17.9,0-6.4,5.2-11.9,13.3-11.9a20.22,20.22,0,0,1,9.7,2.3l-1.7,4.4a14.57,14.57,0,0,0-7-1.9c-4.3,0-7.2,2.6-7.2,6.4,0,8.6,17.1,4.9,17.1,18.2-.1,7.1-6,12.4-14.2,12.4m31.1-.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2a4.07,4.07,0,0,0,4.3,4.4,5.66,5.66,0,0,0,1.8-.3v4.1a12.06,12.06,0,0,1-3.7.6m20.9.1c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.9-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8l-1.6-3.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.6,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm24.6,18.1c-6.6,0-9.1-4.3-9.1-8.5V87.5H454V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2a4.07,4.07,0,0,0,4.3,4.4,5.66,5.66,0,0,0,1.8-.3v4.1a12.69,12.69,0,0,1-3.7.6m12.3-37.6a3.52,3.52,0,1,1,3.9-3.5,3.65,3.65,0,0,1-3.9,3.5m-3.4,5.5h6.8v31.4h-6.8Zm21.4,32.2a19.46,19.46,0,0,1-9.5-2.3l1.8-4.3a13.21,13.21,0,0,0,6.9,1.9c3.4,0,6.2-2.2,6.2-4.9,0-7.5-13.8-4-13.8-14.2,0-4.7,4.2-9.2,11-9.2a16.21,16.21,0,0,1,8.8,2.3l-1.8,3.9a10.31,10.31,0,0,0-5.7-1.8c-3.5,0-5.6,2.1-5.6,4.5,0,7,14,3.9,14,14.4,0,4.9-4.7,9.7-12.3,9.7m29.4-.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2c0,2.5,1.4,4.4,4.3,4.4a5.66,5.66,0,0,0,1.8-.3v4.1a12.06,12.06,0,0,1-3.7.6m12.3-37.6a3.52,3.52,0,1,1,3.9-3.5c.1,2-1.7,3.5-3.9,3.5m-3.3,5.5H543v31.4h-6.8Zm26.2,32.2c-7.7,0-13.6-6.3-13.6-16.6s6.1-16.5,13.7-16.5c3.9,0,6.6,1.1,8,2.3L569,88.6a8.61,8.61,0,0,0-4.9-1.5c-5.5,0-8.3,4.7-8.3,11.8s3.3,11.9,8.2,11.9a8.39,8.39,0,0,0,4.9-1.6l1.7,4.1c-1.5,1.2-4.2,2.3-8.2,2.3m20.6,0a19.46,19.46,0,0,1-9.5-2.3l1.8-4.3a13.21,13.21,0,0,0,6.9,1.9c3.4,0,6.2-2.2,6.2-4.9,0-7.5-13.8-4-13.8-14.2,0-4.7,4.2-9.2,11-9.2a16.85,16.85,0,0,1,8.9,2.3l-1.8,3.9A10.31,10.31,0,0,0,587,87c-3.5,0-5.6,2.1-5.6,4.5,0,7,14,3.9,14,14.4-.1,4.9-4.9,9.7-12.4,9.7" />
              </g>
            </svg>
          </div>
        </div>
      </div>
    </div>
  </div>
  <div class="ons-header__main">
    <div class="ons-container">
      <div
        class="ons-grid ons-grid-flex ons-grid-flex--between ons-grid-flex--vertical-center ons-grid-flex--no-wrap ons-grid--gutterless">
        <div class="ons-grid__col ons-col-auto ons-u-flex-shrink">
          <a class="ons-header__title-link" href="#0">
            <div class="ons-header__title">Design system</div>
          </a>
        </div>
        <div class="ons-grid__col ons-col-auto ons-u-flex-no-shrink ons-u-d-no@l">
          <button type="submit"
            class="ons-btn ons-u-ml-2xs ons-u-d-no ons-js-navigation-button ons-u-d-no@l ons-btn--mobile ons-btn--ghost"
            aria-label="Toggle main menu" aria-controls="main-nav" aria-expanded="false">
            <span class="ons-btn__inner"><span class="ons-btn__text">Menu</span><svg class="ons-icon ons-u-ml-2xs"
                viewBox="0 0 8 13" xmlns="http://www.w3.org/2000/svg" focusable="false" fill="currentColor" role="img"
                aria-hidden="true">
                <path
                  d="M5.74,14.28l-.57-.56a.5.5,0,0,1,0-.71h0l5-5-5-5a.5.5,0,0,1,0-.71h0l.57-.56a.5.5,0,0,1,.71,0h0l5.93,5.93a.5.5,0,0,1,0,.7L6.45,14.28a.5.5,0,0,1-.71,0Z"
                  transform="translate(-5.02 -1.59)" />
              </svg></span>
          </button>
        </div>
      </div>
    </div>
  </div>
  <div class="ons-navigation-wrapper">
    <div class="ons-container ons-container--gutterless@2xs@l">
      <nav class="ons-navigation ons-navigation--main ons-js-navigation" id="main-nav" aria-label="Main menu"
        data-analytics="header-navigation">
        <ul class="ons-navigation__list">
          <li class="ons-navigation__item ons-navigation__item--active">
            <a class="ons-navigation__link" href="#home"> Home </a>
          </li>
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Guidance </a>
          </li>
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Foundations </a>
          </li>
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Components </a>
          </li>
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Patterns </a>
          </li>
        </ul>
      </nav>
    </div>
  </div>
</header>

Neutral header

The neutral header variant provides, by default, a dark masthead and a white main header with black text and elements. This variant is suitable for services that use a multicoloured logo or have a more complex colour palette.

To use this mode use 'variants': 'neutral' in your header configuration.

Example Header Neutral contents

Nunjucksfor Example Header Neutral
Nunjucks macro optionsfor Example Header Neutral
HTMLfor Example Header Neutral

Nunjucks

{% from "components/header/_macro.njk" import onsHeader %}

{{
    onsHeader({
        "title": 'ONS Service',
        "variants": 'neutral',
        "mastheadLogoUrl": '#0',
        "serviceLinks": {
            "id": "service-links",
            "ariaLabel": 'Services menu',
            "ariaListLabel": 'Menu',
            "toggleServicesButton": {
                "text": 'Account',
                "ariaLabel": 'Toggle services menu'
            },
            "itemsList": [
                {
                    "text": "Help",
                    "url": "#0"
                },
                {
                    "text": "My Account",
                    "url": "#0"
                },
                {
                    "text": "Sign out",
                    "url": "#0"
                }
            ]
        },
        "navigation": {
            "id": 'main-nav',
            "ariaLabel": 'Main menu',
            "currentPath": '#menu-item-2',
            "currentPageTitle": 'Design system',
            "itemsList": [
                {
                    "text": 'Menu item 1',
                    "url": '#0'
                },
                {
                    "text": 'Menu item 2',
                    "url": '#menu-item-2'
                },
                {
                    "text": 'Menu item 3',
                    "url": '#0'
                }
            ],
            "toggleNavigationButton": {
                "text": 'Menu',
                "ariaLabel": 'Toggle main menu'
            }
        }
    })
}}

Nunjucks macro options

Name	Type	Required	Description
phase	`PhaseBanner` (ref)	false	Settings to set the Phase banner component within the HTML `<header>` element
wide	boolean	false	Set to “true” to increase the maximum width of the layout container to 1280px
fullWidth	boolean	false	Set to “true” to increase the maximum width of the layout container to the full width of the viewport
classes	string	false	Classes to add to the wrapping `header`
variants	array or string	false	An array of values or single value (string) to adjust the component using available variants: “internal”, "neutral", “description” and "basic"
mastheadLogoUrl	string	false	Wraps the masthead logo in a link. Set the URL for the HTML `href` attribute for the link.
mastheadLogo	object`<MastheadLogo>`	false	Settings for a custom organisation logo in the masthead. Defaults to the ONS logo.
mastheadLogoAltText	string	false	Optional logo alt text override (defaults to 'Office for National Statistics logo')
language	object`<Language>`	false	Settings for the language selector
serviceLinks	object`<ServiceLinks>`	false	Settings for the service links in the masthead
title	string	true (unless `titleLogo` is set or variant is set to basic)	The title for the service
description	string	false	Tagline or description for the service
titleAsH1	boolean	false	Override to wrap the header `title` in an `<h1>` heading
titleLogo	object`<TitleLogo>`	false	Settings for a custom title logo in the header.
titleUrl	string	false	Wraps the title logo in a link. Set the URL for the HTML `href` attribute for the link.
button	object`<SignOutButton>`	false	Settings for the sign out button in the header used to exit a transactional service
navigation	array`<Navigation>`	false	Settings for the main menu links
siteSearchAutosuggest	`Autosuggest` (ref)	false	Sets the autosuggest functionality in the header
menuLinks	object`<MenuLinks>`	false	Settings for the menu button navigation in the masthead
searchLinks	object`<SearchLinks>`	false	Settings for the search button navigation in the masthead

MastheadLogo
Name	Type	Required	Description
classes	string	false	Classes to be added to the masthead logo
large	string	false	HTML to render an image for example embedded `<svg>` or `<img>`
small	string	false	Optionally provide a version of the logo more suited to mobile viewports
multipleLogos	object`<MultipleLogos>`	false	Allows for up to three logos to be used in the masthead

MultipleLogos
Name	Type	Required	Description
logo1	object`<Logo>`	true	First Logo
logo2	object`<Logo>`	false	Second Logo
logo3	object`<Logo>`	false	Third Logo

Logo
Name	Type	Required	Description
image	string	false	HTML to render an image for example embedded `<svg>` or `<img>`. Use 'ONS Logo' for the default ONS icon.
url	string	false	Wraps the masthead logo in a link. Set the URL for the HTML `href` attribute for the link.

TitleLogo
Name	Type	Required	Description
classes	string	false	Classes to be added to the masthead logo
large	string	true	HTML to render an image for example embedded `<svg>` or `<img>`
small	string	false	Optionally provide a version of the logo more suited to mobile viewports

ServiceLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu toggle button displayed on small viewports.
classes	string	false	Classes to add to the `<nav>` element
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Service links navigation”.
ariaListLabel	string	false	The `aria-label` attribute added to the `<ul>` element. Defaults to “Service links”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
toggleServicesButton	object`<ToggleButton>`	true	Settings for the mobile service links toggle button

MenuLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu toggle button displayed on small viewports.
classes	string	false	Classes to add to the `<nav>` element
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Menu links navigation”.
ariaListLabel	string	false	The `aria-label` attribute added to the `<ul>` element. Defaults to “Menu links”.
keyLinks	array`<KeyLink>`	true	Settings for an array of key list items
columns	array`<Column>`	true	Settings for list of columns that contain menu links
toggleMenuButton	object`<ToggleButton>`	true	Settings for the menu toggle button

SearchLinks
Name	Type	Required	Description
id	string	true	The HTML `id` of the `search button` element. Used for the `aria-controls` attribute for the search toggle button displayed on small viewports.
classes	string	false	Classes to add to the `search button` element
searchNavigationAriaLabel	string	false	The `aria-label` attribute added to the `search navigation` element. Defaults to Search navigation”.
searchNavigationButtonAriaLabel	string	false	The `aria-label` attribute added to the `search navigation` button toggle element on mobile. Defaults to "Toggle search".
searchNavigationInputLabel	string	false	Optional override for the search input label. Defaults to "Search the ONS".
searchNavigationButtonText	string	false	Optional override for the search text of the `search navigation` element. Defaults to "Search"
searchButtonAriaLabel	string	false	The `aria-label` attribute added to the `search button` element. Defaults to "Toggle search".
heading	string	true	The heading label for the search items list
itemsList	array`<SearchItem>`	true	Settings for an array of searches associated with each search link. The list can contain a maximum of 5 items.

SearchItem
Name	Type	Required	Description
text	string	true	The text for the search item.
url	string	true	The URL for the search item

Language
Name	Type	Required	Description
languages	array`<languages>`	true	Settings for an array of language toggle links

Languages
Name	Type	Required	Description
url	string	true	URL to change the application language
isoCode	string	true	The ISO language code for the language
text	string	true	The name of the language to display
abbrText	string	false	Abbreviated version of the language text can be provided. This will be displayed on small viewports
current	boolean	true	The current selected language
attributes	object	false	HTML attributes (for example, data attributes) to add to the details element

Navigation
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu button displayed on small viewports.
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Main menu”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
currentPath	string or array`<string>`	true	The path of the current active page. Multiple paths can be provided using an array to highlight nested navigation.
toggleNavigationButton	array`<ToggleButton>`	true	Settings for the navigation menu toggle button displayed on small viewports
removeHorizontalSubNav	boolean	false	Set to “true” to remove the sub navigation
subNavigation	array`<subNavigation>`	false	Settings for the sub navigation menu links

ToggleButton
Name	Type	Required	Description
text	string	false	The text for the toggle button label. Defaults to “Menu”
ariaLabel	string	false	The `aria-label` attribute for the toggle button. Defaults to “Toggle menu”

Item
Name	Type	Required	Description
classes	string	false	Classes to add to the list item element
url	string	true	The URL for the HTML `href` attribute for the path to the linked page
text	string	true	The text label for the link
id	string	false	The HTML `id` of the link
ariaLabel	string	false	The `aria-label` for the item.
title	string	false	The title text for the list item element
iconType	string	false	Adds an icon to a service link item when set to the name of one of the available icons. This is not compatible with navigation links.

SignOutButton
Name	Type	Required	Description
text	string	true	Text for the button
name	string	false	Sets the HTML `name` attribute for the `<button>`. Not valid if `url` is set.
url	string	false	If set, will create an HTML anchor link with the required classes and attributes
attributes	object	false	HTML attributes (for example, data attributes) to add to the button

SubNavigation
Name	Type	Required	Description
id	string	true	The HTML `id` of the `<nav>` element. Used for the `aria-controls` attribute for the menu button displayed on small viewports.
ariaLabel	string	false	The `aria-label` attribute added to the `<nav>` element. Defaults to “Section menu”.
itemsList	array`<Item>`	true	Settings for an array of list items for each navigation link
currentPath	string or array`<string>`	true	The path of the current active page. Multiple paths can be provided using an array to highlight nested navigation.
removeHorizontalSubNav	boolean	false	Set to “true” to remove the sub navigation

KeyLink
Name	Type	Required	Description
heading	string	true	The heading for the link
url	string	false	The URL for the HTML `href` attribute for the path to the linked page
description	string	true	The description label for the link

Column
Name	Type	Required	Description
groups	array`<group>`	true	settings for array of groups in column

Group
Name	Type	Required	Description
heading	string	true	The heading label for the menu group
url	string	false	The URL for the HTML `href` attribute for the path to the linked page
groupItems	array`<groupItem>`	false	Settings for an array of group items for each list item

GroupItem
Name	Type	Required	Description
text	string	true	The text label for the group-item
url	string	false	The URL for the HTML `href` attribute for the path to the linked page

HTML

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                <g class="ons-icon--logo__group ons-icon--logo__group--text" fill="#003c57">
                  <path
                    d="M161,51.9c-11.3,0-16.3-9.3-16.3-20.8s5-20.8,16.3-20.8,16.3,9.5,16.3,20.8c-.1,11.5-5.1,20.8-16.3,20.8m0-38.3c-8.3,0-11.3,9.1-11.3,17.4s2.7,17.3,11.3,17.3,11.2-9.1,11.2-17.3S169.3,13.6,161,13.6m30.2,8.9V51.2h-4.5V22.6H182V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8l-6.7-.1Zm18.9,0V51.2h-4.5V22.6h-4.7V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8l-6.7-.1Zm14-8.8a2.82,2.82,0,0,1-2.9-2.8,2.9,2.9,0,0,1,5.8,0,2.76,2.76,0,0,1-2.9,2.8m-2.3,6h4.6V51.2h-4.6Zm24.3,32.2c-7.4,0-13.2-6.4-13.2-16.5,0-10.3,5.8-16.5,13.4-16.5a12.36,12.36,0,0,1,7.7,2.2l-1.2,2.8a8.92,8.92,0,0,0-5.5-1.7c-6.4,0-9.7,5.5-9.7,13,0,7.7,3.7,13.2,9.5,13.2a9.8,9.8,0,0,0,5.6-1.7l1.2,3c-1.3,1.2-4,2.2-7.8,2.2m15.3-14.6c.6,7.4,4.7,11.1,11.1,11.1a18.36,18.36,0,0,0,8.5-1.9l1.3,3.2a22.58,22.58,0,0,1-10.2,2.1c-8.8,0-15.1-5.3-15.1-16.6,0-10.8,5.8-16.4,13.7-16.4s12.9,4.9,12.9,15.4l-22.2,3.1ZM270.5,22c-5.1,0-9.4,4-9.3,12.8l17.9-2.5C279,25,275.5,22,270.5,22m42.2.5V51.2h-4.5V22.6h-4.7V19.8h4.7V15.2c0-5.7,3.4-9.9,10-9.9a8,8,0,0,1,1.1.1V8.3h-.5c-3.2,0-6,2.1-6,6.4v5.1h6.6v2.8Zm23.2,29.4c-9.3,0-13.5-7.2-13.5-16.5s4.2-16.5,13.5-16.5,13.5,7.2,13.5,16.5-4.2,16.5-13.5,16.5m0-29.8c-6.9,0-8.8,7-8.8,13.4s2.1,13.1,8.8,13.1c6.9,0,8.9-6.6,8.9-13.1s-2-13.4-8.9-13.4m33.3.6c-2.9-.8-7.1-.6-9.1.6V51.2h-4.6V21.1c3.3-1.4,6.6-2.2,12.5-2.2h2.4c0,.1-1.2,3.8-1.2,3.8ZM171.3,114.8,153.5,87.3c-1.3-2.1-2.3-4.1-2.3-4.1h-.1s.2,2.3.2,4.8v26.8h-5.8V74.7h6.6L169,100.5a46.13,46.13,0,0,1,2.4,4.1h.1s-.2-2.3-.2-4.7V74.6h5.9v40.1l-5.9.1Zm25,.8c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.8-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8l-1.6-3.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.7,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm24.5,18.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2c0,2.5,1.4,4.4,4.3,4.4a5.66,5.66,0,0,0,1.8-.3v4.1a11.47,11.47,0,0,1-3.7.6M239,77.9a3.52,3.52,0,1,1,3.9-3.5,3.71,3.71,0,0,1-3.9,3.5m-3.4,5.5h6.8v31.4h-6.8Zm26.9,32.2c-9.6,0-14.4-7.1-14.4-16.5s4.8-16.6,14.4-16.6,14.3,7.2,14.3,16.6-4.7,16.5-14.3,16.5m0-28.7c-5.8,0-7.5,6.1-7.5,12.2s1.8,11.9,7.5,11.9,7.5-5.8,7.5-11.9-1.7-12.2-7.5-12.2m39.3,27.9V92.3c0-4-3.4-5.5-7.3-5.5a16,16,0,0,0-5.4.9v27.1h-6.7v-30a32.8,32.8,0,0,1,12.5-2.3c8.2,0,13.7,2.8,13.7,9.7v22.6Zm25.7.8c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.9-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8L316,84.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.7,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm13.2,17.4V69h6.7v45.8Zm38.6.8a23.94,23.94,0,0,1-10.9-2.3l1.9-4.9a17,17,0,0,0,7.7,1.9c4.7,0,8-2.7,8-6.7,0-8.8-16.7-5.4-16.7-17.9,0-6.4,5.2-11.9,13.3-11.9a20.22,20.22,0,0,1,9.7,2.3l-1.7,4.4a14.57,14.57,0,0,0-7-1.9c-4.3,0-7.2,2.6-7.2,6.4,0,8.6,17.1,4.9,17.1,18.2-.1,7.1-6,12.4-14.2,12.4m31.1-.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2a4.07,4.07,0,0,0,4.3,4.4,5.66,5.66,0,0,0,1.8-.3v4.1a12.06,12.06,0,0,1-3.7.6m20.9.1c-9.2,0-13.6-3.7-13.6-9.7,0-8.5,8.9-10.7,19.4-11.7V92.4c0-4.3-2.9-5.6-7.2-5.6a22.34,22.34,0,0,0-8.5,1.8l-1.6-3.8a30.2,30.2,0,0,1,11.3-2.3c7,0,12.3,2.9,12.3,10.9v19.9c-2.6,1.4-6.9,2.3-12.1,2.3m5.8-18.2c-7.8.8-13,2.3-13,8.3,0,4.2,3,6.1,7.7,6.1a12.33,12.33,0,0,0,5.3-1.1Zm24.6,18.1c-6.6,0-9.1-4.3-9.1-8.5V87.5H454V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2a4.07,4.07,0,0,0,4.3,4.4,5.66,5.66,0,0,0,1.8-.3v4.1a12.69,12.69,0,0,1-3.7.6m12.3-37.6a3.52,3.52,0,1,1,3.9-3.5,3.65,3.65,0,0,1-3.9,3.5m-3.4,5.5h6.8v31.4h-6.8Zm21.4,32.2a19.46,19.46,0,0,1-9.5-2.3l1.8-4.3a13.21,13.21,0,0,0,6.9,1.9c3.4,0,6.2-2.2,6.2-4.9,0-7.5-13.8-4-13.8-14.2,0-4.7,4.2-9.2,11-9.2a16.21,16.21,0,0,1,8.8,2.3l-1.8,3.9a10.31,10.31,0,0,0-5.7-1.8c-3.5,0-5.6,2.1-5.6,4.5,0,7,14,3.9,14,14.4,0,4.9-4.7,9.7-12.3,9.7m29.4-.1c-6.6,0-9.1-4.3-9.1-8.5V87.5h-4.4V83.4h4.4v-7l6.7-1.9v8.9h6.1v4.1h-6.1v19.2c0,2.5,1.4,4.4,4.3,4.4a5.66,5.66,0,0,0,1.8-.3v4.1a12.06,12.06,0,0,1-3.7.6m12.3-37.6a3.52,3.52,0,1,1,3.9-3.5c.1,2-1.7,3.5-3.9,3.5m-3.3,5.5H543v31.4h-6.8Zm26.2,32.2c-7.7,0-13.6-6.3-13.6-16.6s6.1-16.5,13.7-16.5c3.9,0,6.6,1.1,8,2.3L569,88.6a8.61,8.61,0,0,0-4.9-1.5c-5.5,0-8.3,4.7-8.3,11.8s3.3,11.9,8.2,11.9a8.39,8.39,0,0,0,4.9-1.6l1.7,4.1c-1.5,1.2-4.2,2.3-8.2,2.3m20.6,0a19.46,19.46,0,0,1-9.5-2.3l1.8-4.3a13.21,13.21,0,0,0,6.9,1.9c3.4,0,6.2-2.2,6.2-4.9,0-7.5-13.8-4-13.8-14.2,0-4.7,4.2-9.2,11-9.2a16.85,16.85,0,0,1,8.9,2.3l-1.8,3.9A10.31,10.31,0,0,0,587,87c-3.5,0-5.6,2.1-5.6,4.5,0,7,14,3.9,14,14.4-.1,4.9-4.9,9.7-12.4,9.7" />
                </g>
              </svg>
            </div>
          </a>
        </div>
        <div class="ons-header__links ons-grid__col ons-u-ml-auto">
          <div class="ons-grid__col ons-col-auto ons-u-d-no@2xs@m">
            <nav class="ons-header-service-nav ons-header-service-nav--main" aria-label="Services menu">
              <ul class="ons-header-service-nav__list">
                <li class="ons-header-service-nav__item">
                  <a href="#0" class="ons-header-service-nav__link">Help</a>
                </li>
                <li class="ons-header-service-nav__item">
                  <a href="#0" class="ons-header-service-nav__link">My Account</a>
                </li>
                <li class="ons-header-service-nav__item">
                  <a href="#0" class="ons-header-service-nav__link">Sign out</a>
                </li>
              </ul>
            </nav>
          </div>
          <div class="ons-grid__col ons-col-auto ons-u-d-no@m">
            <button type="button" class="ons-btn ons-u-d-no ons-js-toggle-services ons-btn--mobile ons-btn--neutral"
              aria-label="Toggle services menu" aria-controls="service-links" aria-expanded="false">
              <span class="ons-btn__inner"><span class="ons-btn__text">Account</span><svg class="ons-icon ons-u-ml-2xs"
                  viewBox="0 0 8 13" xmlns="http://www.w3.org/2000/svg" focusable="false" fill="currentColor" role="img"
                  aria-hidden="true">
                  <path
                    d="M5.74,14.28l-.57-.56a.5.5,0,0,1,0-.71h0l5-5-5-5a.5.5,0,0,1,0-.71h0l.57-.56a.5.5,0,0,1,.71,0h0l5.93,5.93a.5.5,0,0,1,0,.7L6.45,14.28a.5.5,0,0,1-.71,0Z"
                    transform="translate(-5.02 -1.59)" />
                </svg></span>
            </button>
          </div>
        </div>
      </div>
    </div>
    <nav class="ons-header-service-nav ons-header-service-nav--mobile ons-u-d-no ons-js-services-mobile-nav"
      id="service-links" aria-label="Services menu">
      <ul class="ons-header-service-nav__list">
        <li class="ons-header-service-nav__item ons-header-service-nav__item--mobile">
          <a href="#0" class="ons-header-service-nav__link">Help</a>
        </li>
        <li class="ons-header-service-nav__item ons-header-service-nav__item--mobile">
          <a href="#0" class="ons-header-service-nav__link">My Account</a>
        </li>
        <li class="ons-header-service-nav__item ons-header-service-nav__item--mobile">
          <a href="#0" class="ons-header-service-nav__link">Sign out</a>
        </li>
      </ul>
    </nav>
  </div>
  <div class="ons-header__main">
    <div class="ons-container">
      <div
        class="ons-grid ons-grid-flex ons-grid-flex--between ons-grid-flex--vertical-center ons-grid-flex--no-wrap ons-grid--gutterless">
        <div class="ons-grid__col ons-col-auto ons-u-flex-shrink">
          <div class="ons-header__title">ONS Service</div>
        </div>
        <div class="ons-grid__col ons-col-auto ons-u-flex-no-shrink ons-u-d-no@l">
          <button type="submit"
            class="ons-btn ons-u-ml-2xs ons-u-d-no ons-js-navigation-button ons-u-d-no@l ons-btn--mobile ons-btn--ghost"
            aria-label="Toggle main menu" aria-controls="main-nav" aria-expanded="false">
            <span class="ons-btn__inner"><span class="ons-btn__text">Menu</span><svg class="ons-icon ons-u-ml-2xs"
                viewBox="0 0 8 13" xmlns="http://www.w3.org/2000/svg" focusable="false" fill="currentColor" role="img"
                aria-hidden="true">
                <path
                  d="M5.74,14.28l-.57-.56a.5.5,0,0,1,0-.71h0l5-5-5-5a.5.5,0,0,1,0-.71h0l.57-.56a.5.5,0,0,1,.71,0h0l5.93,5.93a.5.5,0,0,1,0,.7L6.45,14.28a.5.5,0,0,1-.71,0Z"
                  transform="translate(-5.02 -1.59)" />
              </svg></span>
          </button>
        </div>
      </div>
    </div>
  </div>
  <div class="ons-navigation-wrapper ons-navigation-wrapper--neutral">
    <div class="ons-container ons-container--gutterless@2xs@l">
      <nav class="ons-navigation ons-navigation--main ons-js-navigation" id="main-nav" aria-label="Main menu"
        data-analytics="header-navigation">
        <ul class="ons-navigation__list">
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Menu item 1 </a>
          </li>
          <li class="ons-navigation__item ons-navigation__item--active">
            <a class="ons-navigation__link" href="#menu-item-2"> Menu item 2 </a>
          </li>
          <li class="ons-navigation__item">
            <a class="ons-navigation__link" href="#0"> Menu item 3 </a>
          </li>
        </ul>
      </nav>
    </div>
  </div>
</header>

Customised header

If you need more control over the way the header looks, we’ve created a set of css properties specific to the header.

:root {
  --ons-color-header: var(--ons-color-branded);
  --ons-color-header-neutral: var(--ons-color-white);
  --ons-color-header-masthead: var(--ons-color-white);
  --ons-color-header-masthead-internal: var(--ons-color-branded-secondary);
  --ons-color-header-masthead-neutral: var(--ons-color-black);
  --ons-color-header-title: var(--ons-color-text);
  --ons-color-header-navigation-links: var(--ons-color-text);
  --ons-color-service-links: var(--ons-color-white);
}

Theming other components

In a similar approach to the header, there is a set of css properties that allow you to control the look of other components.

:root {
  --ons-color-cta-bg: var(--ons-color-branded-tint);
  --ons-color-banner-bg: var(--ons-color-grey-5);
  --ons-color-banner-bg-dark: var(--ons-color-grey-15);
  --ons-color-page-light: var(--ons-color-white);
  --ons-color-banner-browser-bg: var(--ons-color-black);
  --ons-color-hero-bg: var(--ons-color-branded-tint);
  --ons-color-hero-bg-dark: var(--ons-color-branded);
}

Using custom brand assets

Logo

The header component and footer component have the option to display a custom logo using an inline svg (opens in a new tab)

Favicons

If you’re using the base page template you’ll automatically get the default ONS favicons. If you need to use your own you are able to override the favicons block in your template.

The code example below shows the base favicons block with the default content. Paste the code snippet into your template and update the icon paths.

{% block favicons %}
    <link rel="icon" type="image/x-icon" href="/favicons/favicon.ico">
    <link rel="icon" type="image/png" href="/favicons/favicon-32x32.png" sizes="32x32">
    <link rel="icon" type="image/png" href="/favicons/favicon-16x16.png" sizes="16x16">
    <link rel="mask-icon" href="/favicons/safari-pinned-tab.svg" color="#000000">
    <link rel="apple-touch-icon" type="image/png" href="/favicons/apple-touch-icon.png" sizes="180x180">
    <link rel="manifest" href="/favicons/manifest.json">
{% endblock %}

You’re also able to override the default Open Graph and Twitter meta information using the social block. The default base page template social block is shown in the snippet below.

{% block social %}
  <meta property="og:type" content="website">
  <meta property="og:url" content="pageConfig.absoluteUrl">
  <meta property="og:title" content="pageConfig.title">
  <meta property="og:image" content="favicons/opengraph.png">
  <meta property="og:image:type" content="image/png">
  <meta property="og:image:width" content="1200">
  <meta property="og:image:height" content="630">
  <meta property="og:description" content="pageConfig.description">
  <meta property="og:site_name" content="pageConfig.title">
  <meta property="og:locale" content="currentLanguageISOCode">
  <meta property="og:locale:alternate" content="otherLanguageISOCode"> 
  <meta name="twitter:card" content="summary">
  <meta name="twitter:site" content="pageConfig.social.twitterSite">
  <meta name="twitter:url" content="pageConfig.absoluteUrl">
  <meta name="twitter:title" content="pageConfig.title">
  <meta name="twitter:description" content="pageConfig.description">
  <meta name="twitter:image" content="/favicons/twitter.png">
{% endblock %}

Help improve this page

Let us know how we could improve this page, or share your user research findings. Discuss this page on GitHub (opens in a new tab)

Cookies on ons.gov.uk

Development Custom themes

Overview

Using a custom colour palette

Referencing a custom CSS file

Example

Theming the header

Default header

Example Header External With Navigation contents

Nunjucks

Nunjucks macro options

HTML

Neutral header

Example Header Neutral contents

Nunjucks

Nunjucks macro options

HTML

Customised header

Theming other components

Using custom brand assets

Logo

Favicons

Social media meta

Help improve this page