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parcel-bundler / lightningcss

An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.
https://lightningcss.dev
Mozilla Public License 2.0
6.36k stars 182 forks source link

Viewport units #534

Open Ayc0 opened 1 year ago

Ayc0 commented 1 year ago

Shouldn't viewport units like dvh, svh, and lvh be compiled to vh for older browsers? (same for dvw, svw, and lvw → vw)

Here we can see that the newer CSS colors are getting updated for older browsers (chrome 90), but not the viewport height – playground

image
devongovett commented 1 year ago

I don't think compiling dvw to just vw would be correct though. It wouldn't adjust correctly based on things like toolbars appearing. You could polyfill it but you'd need JavaScript.

Ayc0 commented 1 year ago

Even if it's not 100% correct, it could be a good fallback Like for colors out of their color scale (like color(display-p3 0 1 0))