Semantic is a UI framework designed for theming.

Key Features

50+ UI elements

3000 + CSS variables

3 Levels of variable inheritance (similar to SublimeText)

Built with EM values for responsive design

Flexbox friendly

Semantic allows developers to build beautiful websites fast, with concise HTML, intuitive javascript, and simplified debugging, helping make front-end development a delightful experience. Semantic is responsively designed allowing your website to scale on multiple devices. Semantic is production ready and partnered with frameworks such as React, Angular, Meteor, and Ember, which means you can integrate it with any of these frameworks to organize your UI layer alongside your application logic.

Semantic UI is now compatible with Node 18 and Gulp 4.

Please help us keep the issue tracker organized. For technical questions that do not include a specific JSFiddle test case (bug reports), or feature request please use StackOverflow to find a solution.

Visit our contributing guide for more on what should be posted to GitHub Issues.

Semantic UI includes an interactive installer to help setup your project.

For more details on setup visit our getting started guide.

To learn more about theming please read our theming guide

Environment | Install Script | Repo

CSS Only | npm install semantic-ui-css | CSS Repo

LESS Only |npm install semantic-ui-less | LESS Repo

LESS plugin |npm install less-plugin-semantic-ui | LESS Plugin Repo

EmberJS |ember install:addon semantic-ui-ember | Ember Repo

|Meteor - LESS |meteor add semantic:ui | Meteor Repo |

|Meteor - CSS |meteor add semantic:ui-css | CSS Repo |

Bower |bower install semantic-ui |

Check out our integration wiki for more options.

Last 2 Versions FF, Chrome, Safari Mac

IE 11+

Android 4.4+, Chrome for Android 44+

iOS Safari 7+

Microsoft Edge 12+

Although some components will work in IE9, grids and other flexbox components are not supported by IE9 and may not appear correctly.

Please do not post usage questions to GitHub Issues. For these types of questions use our [Gitter chatroom][Gitter.im Room] or StackOverflow.

GitHub Issues is for suggesting enhancements and reporting bugs. Before submiting a bug make sure you do the following:

Check out our contributing guide for info on our release cycle.

Fork this boilerplate JSFiddle to create a test case for your bug. If a bug is apparent in the docs, that's ok as a test case, just make it clear exactly how to reproduce the issue. Only bugs that include a test case can be triaged.

When adding pull requests, be sure to merge into the next branch. If you need to demonstrate a fix innext release, you can use this JSFiddle

Chinese A Chinese mirror site is available at http://www.semantic-ui.cn.

Right-to-Left (RTL) An RTL version can be created using our build tools by selecting rtl from the install script.

Translation To help translate see the Wiki Guide for translations.

Resource | Description

Bugs & Feature Requests |  All bug submission require a link to a test case, and a set of steps to reproduce the issue. You can make a test case by forking this JSFiddle, then submit your bug report on GitHub Issues

Live Chat | Join our [Gitter.im Room][Gitter.im Room]

Newsletter Updates | Sign up for updates at semantic-ui.com

Additional Resources  | Submit a question on StackOverflow or ask our Google Group

Project | How To Help | Next Step

Localization | Help us translate Semantic UI into your language | Join our Translation Community

SCSS | SASS needs PR to support variables inside@import | Add Pull Request for #739

Angular | Help develop angular bindings | Reach Out on GitHub Issues

Guides & Tutorials | Help write guides and tutorials | Join the discussion

If you'd like to start a conversation about Semantic feel free to e-mail me at jack@semantic-ui.com

[Gitter.im Room]: https://gitter.im/Semantic-Org/Semantic-UI