css :where() :is() not supported/working correctly

BrowserWorks / Waterfox-Classic

The Waterfox Classic repository, for legacy systems and customisation.

https://classic.waterfox.net

Mozilla Public License 2.0

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css :where() :is() not supported/working correctly #154

Open tanpau opened 1 year ago

tanpau commented 1 year ago

Describe the bug

https://picocss.com/examples/preview/

many components are rendered incorrectly ...

OS: Linux
Version: Waterfox Classic 2022.08

Additional context tracked down the problem handling of CSS Pseudo-classes :where() and :is() according to (https://developer.mozilla.org/en-US/docs/Web/CSS/:is) they are supported in Firefox since version 78/82.

Don't know which version actual Waterfox classic is based on ...

hawkeye116477 commented 1 year ago

Generally it's based on FF 56, but contains also some changes from higher versions.