--- layout : 'default' css : 'index' title : 'Introduction' type : 'Semantic' ---
1.0.0 Beta

Semantic UI HTML | is the vocabulary of the web.

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Unbelievable Theming

Semantic provides true design freedom. Change the look and feel of your components with just a few variables.

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3000+ CSS Variables

The only dogma from this framework: everything arbitrary is mutable.

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50+ UI Definitions

Build your entire site with one UI stack. Share your UI between multiple projects.

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2200+ Commits

Semantic UI is a free open source project already used in multiple large scale production environments.

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Unbelievable Breadth

Definitions aren't limited to just buttons on a page. Semantic's components fall into four categories, elements, collections, modules, and views which cover the gamut of interface design.

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Simplify Your Codebase

Semantic's design is based around common usage, using features of natural language like, plurality, tense, and word order to make your code self-explanatory.

Liberate your Development

Enterprise Ready

Build tools, performance logging, support for custom definitions, multiple-levels of theme inheritanceance—a developer's wet dream.

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Beginner Friendly

Don't feel comfortable tweaking everything? Download free community designed themes and use our customizer to build a package fit for your needs.

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