Pure CSS vs Semantic UI

Pure CSS is used by more websites in our catalog: 816 use Pure CSS and 277 use Semantic UI.

Semantic UI sites have the higher median Ahrefs Domain Rating (Pure CSS: 32, Semantic UI: 40).

Between 2026-06 and 2026-07, Pure CSS went from 0.11% to 0.09% of all tracked sites, while Semantic UI went from 0.04% to 0.03%. Semantic UI is gaining ground faster in our index.

1 websites in our catalog use both Pure CSS and Semantic UI.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.