A UI component framework based around useful principles from natural langua...



Semantic UI

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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.

2.5.0 Release (Oct 6, 2022)

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

User Support

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.


Recommended Install

  1. ``` sh
  2. npm install semantic-ui  # Use themes, import build/watch tasks into your own gulpfile.
  3. ```

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

Additional Versions

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.

Browser Support

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.


Getting Help

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

Submitting Bugs and Enhancements

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.

Pull Requests

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
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 [ Room][ Room]
Newsletter Updates | Sign up for updates at
Additional Resources  | Submit a question on StackOverflow or ask our Google Group

Places to Help

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

Reaching Out

If you'd like to start a conversation about Semantic feel free to e-mail me at

[ Room]: