Sumi.css
Ranked 10 of 11 CSS frameworks by recommenders
A small free CSS framework that one recommender hopes will keep being updated. The most common criticism is that its design looks AI-generated.
A small free CSS framework that one recommender hopes will keep being updated. The most common criticism is that its design looks AI-generated.
12 people gave an opinion
- recommend it
- 6
- criticize it
- 6
- approval share
- 50%
Recommended in 1 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 6 people recommend itNeeds 10 or more, not met.
- 1 recommender for every criticNeeds 2 to 1 or better, not met.
- Recommended in 1 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Hope it keeps being updated
“I hope you guys can keep updating for a while longer”
Comment from 21 Oct 2026 in “Show HN: Sumi.css – CSS Framework”
What people warn about
Each mark is one comment
Looks AI-generated or vibecoded
“Did this need to be vibecoded? It's a small css file.”
Comment from 22 Oct 2026 in “Show HN: Sumi.css – CSS Framework” “It uses the LLM favourite left border decoration.”
Comment from 22 Oct 2026 in “Show HN: Sumi.css – CSS Framework”
Other CSS frameworks people recommend
The four most recommended other CSS frameworks, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Tailwind CSS | 387 | 234 | 62% | 12 | 5 yrs6 owners | — |
| Bootstrap | 73 | 40 | 65% | 11 | — | — |
| 98.css | 42 | 4 | 91% | 4 | — | Approved |
| Oat HTML UI component library | 29 | 11 | 73% | 2 | — | — |
| Sumi.cssThis page | 6 | 6 | 50% | 1 | — | — |
What people said
7 of the 12 comments that mention it, newest first. Each links to the original comment.
“None of them work on older browser”
“All of them failed my ten second evaluation.”
“Did this need to be vibecoded? It's a small css file.”
“It uses the LLM favourite left border decoration.”
“Several of their new components are just classes, defeating the original purpose”
“It's also incredibly annoying to navigate on mobile, due to everything being in separate pages and quite slow to load.”
“I hope you guys can keep updating for a while longer”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.