---
title: CSS Ruby Layout
slug: Web/CSS/CSS_Ruby
tags:
  - CSS
  - CSS Ruby
  - Guide
  - Overview
  - Reference
spec-urls: https://drafts.csswg.org/css-ruby/
---
{{CSSRef}}

**CSS Ruby Layout** is a module of [CSS](/en-US/docs/Web/CSS) that provides the rendering model and formatting controls related to the display of ruby annotation. Ruby annotation is a form of interlinear annotation, consisting of short runs of text alongside the base text. They are typically used in East Asian documents to indicate pronunciation or to provide a short annotation.

## Reference

### Properties

- {{cssxref("ruby-align")}}
- {{cssxref("ruby-position")}}

## Specifications

{{Specifications}}

## See Also

- {{HTMLElement('ruby')}}
