This page is obsolete. It is being retained for archival purposes. It may document extensions or features that are obsolete and/or no longer supported. Do not rely on the information here being up-to-date. See Codex, the design system for Wikimedia instead.

A living style guide offers improved documentation of the visual appearance and behaviour of a site.
Unlike a static style guide (say, a wiki page or PDF), it is generated on-the-fly from the actual HTML, CSS, and JavaScript used in production.^[1][2] This allows us to view styles as they are live on the site, and inline comments can be added to document the purpose of a particular style or set of styles.

MediaWiki's style guide can be found at https://design.wikimedia.org/style-guide/

Its source code is located in wikimedia/WikimediaUI-StyleGuide at GitHub.

When you use OOUI components within MediaWiki, they use its WikimediaUI theme which has its roots in mediawiki.UI.

Implementation

See also

• Tasks and bug reports in Wikimedia Phabricator
• Historical discussions to move to one single Design style guide: T151117

Notes