mdo/wtf-html-css resource
Common reasons your HTML and CSS may be fucked. observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4546
- days_rel: n/a
- days_push: 1644
- n_releases_24m: 0
Adoption not part of the score
1440 stars · 80 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A curated guide by Bootstrap creator Mark Otto listing common, frustrating HTML and CSS pitfalls and how to avoid them. It is a static documentation site covering gotchas like box model math, float behavior, and browser quirks.
Use cases
- learn common HTML and CSS pitfalls
- debug why my CSS layout breaks
- understand float and margin collapse behavior
- avoid browser quirks like Mobile Safari rem bugs
- onboard junior frontend developers to CSS gotchas
When to choose
- you want a quick reference of classic HTML/CSS gotchas
- you're teaching or learning frontend fundamentals
- you're debugging confusing layout or browser-specific issues
When to avoid
- you need up-to-date coverage of modern CSS (flexbox, grid, container queries)
- you want an interactive tool or linter rather than a reading list
- you need comprehensive documentation rather than a curated list of quirks
Facets
learning-resource · maturity maintenance
documentation ui-components web-development frontend tutorials browser css html gotchas frontend-tips curated-list web-server
2 sources
- readme: https://github.com/mdo/wtf-html-css · fetched 2026-08-28 · 71bd4356b813
- homepage: http://wtfhtmlcss.com · fetched 2026-08-29 · 419af91a60a2
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mdo/wtf-html-css | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="mdo/wtf-html-css")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem