Lily Design System™

Hero Headline

A hero headline is a full-bleed hero section with headline content overlaid on media. It creates an immersive editorial introduction combining large background imagery or video with prominent text.

This headless component uses a <div> element with an aria-label to create a labeled container for the hero content overlaid on background media.

Example

HeroHeadline
Show demo markup 
<div class="hero-headline" aria-label="a full-bleed hero section with headline overlaid on media">HeroHeadline</div>
Usage example 
<HeroHeadline label="Feature story">
  <img slot="media" src="hero.jpg" alt="Aerial view of city" />
  <h1>The Changing Skyline</h1>
  <p>How urban development is reshaping cities</p>
</HeroHeadline>
Show Svelte source 
// In your Svelte component:
import HeroHeadline from "lily-design-system-svelte-headless/components/HeroHeadline/HeroHeadline.svelte";

<HeroHeadline>
  <!-- content -->
</HeroHeadline>

Usage

<HeroHeadline label="Feature story">
  <img slot="media" src="hero.jpg" alt="Aerial view of city" />
  <h1>The Changing Skyline</h1>
  <p>How urban development is reshaping cities</p>
</HeroHeadline>
<HeroHeadline label="Investigation">
  <video slot="media" autoplay muted loop>
    <source src="ocean.mp4" type="video/mp4" />
  </video>
  <h1>Rising Waters</h1>
  <p>Climate change and coastal communities</p>
</HeroHeadline>
<HeroHeadline label="Photo essay">
  <img slot="media" src="landscape.jpg" alt="Mountain landscape at dawn" />
  <h1>Into the Wild</h1>
  <p>A photographic journey through national parks</p>
  <Byline>By Jane Smith</Byline>
</HeroHeadline>

Props

  • label: string (required) -- accessible label for the hero section
  • children: slot (required) -- headline content overlaid on media
  • media: slot (required) -- background media (image or video)
  • ...restProps: Any additional HTML attributes

Keyboard Interactions

  • None -- children handle their own keyboard interactions

ARIA

  • aria-label on container -- describes the hero section for screen readers
  • Media should have appropriate alt text

When to Use

  • Use for immersive editorial story introductions with large media
  • Use at the top of long-form articles or features where visual impact matters
  • Use when background media is integral to the story being told

When Not to Use

  • Do not use on transactional pages -- keep forms focused without large visual elements
  • Do not use without meaningful media content -- use Hero for text-only heroes
  • Do not use multiple hero headlines on one page

Headless

This component provides a <div> container with aria-label and media/content slots, with zero visual styling. The consumer is responsible for all CSS including full-bleed layout, media sizing, text overlay positioning, contrast treatment, and responsive behavior.

Styles

The consumer provides all CSS styling. The component renders with a .hero-headline class for targeting. No default styles are included -- this is a fully headless component.

Testing

  • Verify the component renders a <div> element with class hero-headline
  • Verify aria-label is applied
  • Verify media slot renders background content
  • Verify children slot renders overlaid content
  • Verify pass-through attributes are applied

Advice

  • Designers: Ensure text remains readable over media at all viewport sizes. Provide sufficient contrast between text and background. Consider how media crops at different screen sizes.
  • Developers: Always provide a descriptive label prop for accessibility. Ensure media has appropriate alt text. Consider lazy loading for large media assets. Test text readability across viewport sizes.

Implementation Notes

  • Uses <div> element as container
  • aria-label describes the hero section for screen readers
  • Contains slots for media background and overlaid headline content
  • Consumer responsible for text contrast, overlay, and positioning
  • Inspired by Reuters Graphics HeroHeadline component

Related components

  • hero — a large box or image with a title and description

References

Canonical contract

Generated from this component's canonical metadata — the machine-checked source the implementations are held to.

Metadata

  • Component: hero-headline
  • PascalCase: HeroHeadline
  • Description: a full-bleed hero section with headline overlaid on media
  • Status: beta — implemented and unit-tested in all seven frameworks with an axe-clean demo page; not yet exercised in composed flows
  • HTML tag: <div>
  • CSS class: .hero-headline
  • Interactive: no

ARIA

  • aria-label on container
  • Media should have appropriate alt text

Keyboard

  • None -- children handle interactions

Props

  • label: string (required) -- accessible label for the hero section
  • children: slot (required) -- headline content overlaid on media
  • media: slot (required) -- background media (image or video)
  • ...restProps: Any additional HTML attributes