Baseline - Web Features You Can (Really) Use Today
summary
Baseline is a cross‑vendor compatibility definition owned by the W3C Web Developer Experience group that marks features as Baseline limited availability, Baseline newly available, or Baseline widely available (widely = available in core browsers for 30 months). It uses web platform tests and the interop dashboard (progress rose from 46% to 83% in 2024) and exposes a runtime Baseline widget and web.features explorer so you can safely adopt things like Array.at, arrayGroupBy, Intl.Segmenter, container queries and :has as progressive enhancement.
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chapters (19)
- 0:00Introduction to Baseline
- 1:09CSS Grid support confusion
- 3:18Web features shipping today
- 4:43Interoperability challenges
- 6:06Interop Project progress
- 8:59Tracking new web features
- 10:24What is Baseline?
- 11:51Baseline browser support
- 12:57Baseline availability stages
- 16:50Choosing Baseline stages
- 20:23Favorite Baseline features
- 24:39Intl APIs in Baseline
- 27:54Text balancing in CSS
- 29:18Vertical centering with align
- 31:02CSS custom properties with @property
- 33:11Container queries and :has
- 36:25Using Baseline in development
- 40:19Tools and resources for Baseline
- 43:52Summary and call to action
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