# Holy Grail Layout

> A CSS grid holy grail layout with six skeleton wireframe regions (header, nav, aside-left, main, aside-right, footer), colored dashed borders, container queries for fluid sidebars, and full design-system token integration.

- Category: Layout
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Vector
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Tags: grid, skeleton
- Page: https://builder.atheros.ai/components/holy-grail
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_holy_grail/preview-a6ce31e36d25.webp

## Features

- Classic holy grail grid layout with 6 named regions (header, nav, aside-left, main, aside-right, footer)
- Skeleton wireframe placeholders with color-coded dashed borders per region
- Container queries for fluid sidebar columns using minmax(10rem, 18cqi)
- Dark/light theme toggle with smooth CSS transitions
- All colors, spacing, and radii driven by design-system tokens
- Prefers-reduced-motion support for accessibility
- Region accent colors via CSS custom properties with dark mode variants

## Accessibility

- **ARIA label** — `.hg-wrap` has `aria-label="Holy Grail wireframe layout"`
- **Busy state** — `.hg-layout` starts `aria-busy="true"` and is cleared to `false` by `markReady()` once rendered
- **Reduced motion** — `prefers-reduced-motion: reduce` kills all animations and transitions
- **Focus-visible** — Interactive focus styling relies on `:focus-visible` from the design tokens
- **Dynamic viewport** — Uses `100dvh` for proper mobile viewport height

## Common questions

**Which frameworks is Holy Grail Layout available in?**

Holy Grail Layout ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is Holy Grail Layout free?**

Holy Grail Layout is a premium component. Anyone can preview it; the source, downloads and AI customisation are included with Atheros AI Pass.

**Does Holy Grail Layout support dark mode?**

Yes. Holy Grail Layout ships light and dark themes, both drawn from the Vector design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Holy Grail Layout live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/holy-grail

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt