#3928 - Further CSS validation

Identifier #3928
Issue type Feature request or suggestion
Title Further CSS validation
Status Open
Tags

Type: Standards compliance (custom)

Handling member Deleted
Addon General / Uncategorised
Description We do a pretty good job of validating CSS, but there's always more to do.

Here's some things that are just pass-through in the validator, but could be properly validated:
- @font-face
- @keyframes
- @namespace
- animation property (due to great complexity, lots of shorthanded properties repeated any number of times)
- background-image & border-image properties (due to great complexity, image rendering functions repeated any number of times)
- filter property (due to great complexity)
- calc(...) equations

Steps to reproduce

Funded? No
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Rating

Unrated