[Bug]: overflow: overlay is a legacy value #784
Description
Expected Behavior
This is a validation error; I'm expecting that the css fully validates.
Current Behavior
The CSS does not validate; but it still works.
Steps to reproduce
W3C validation.
Proposed fix or additional info.
Replace the overflow: overlay; legacy fix with the scrollbar-gutter property in CSS ML4. The property has good coverage according to can i use:
https://caniuse.com/mdn-css_properties_scrollbar-gutter
Version
On which browser do you see the issue?
No response