[pikzen]

Aside from what has already been said (SemUI is a MASSIVE piece of CSS), Semantic UI is also not semantic.

<article> is semantic <div class="article full width"> is not semantic, it's describing how it should appear.

You can break half of the examples page by just clicking everywhere and typing and such. I currently have three buttons stuck in the middle of their two positions, textboxes being broken, etc. It needs work.

Also it's rarely a good thing if your goddamn landing page makes an i3 stutter when rendering it. Doesn't really scream lightweight or efficient (although the biggest culprit is that background header video)

[will_work4tears]

However, Semantic.gs is pretty good. Minimal and much more semantic.