July 2023 web platform update

Now widely available on the web platform
Widely available

clip-path: The clip-path CSS property and SVG attribute set the visible area of an element. Everything outside the area will be hidden. Learn more.
:is(): The :is() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list. Learn more.
:not: The :not() functional pseudo-class matches elements that do not match the selectors in its argument. Learn more.
:where(): The :where() CSS functional pseudo-class takes a selector list as its argument, and matches any element that can be selected by one of the selectors in that list. It is functionally equivalent to the selectors in the list, but doesn't affect the CSS rule specificity. Learn more.

animation-composition: The animation-composition CSS property chooses how to combine animations that affect the same property. Learn more.
Array by copy: The toReversed(), toSorted(), toSpliced(), and with() methods of arrays and typed arrays return changed copies of arrays. They stand in contrast to methods such as sort() or reverse() that change arrays in place. Learn more.
Two-value display property: The display CSS property accepts multiple keyword values, such as inline flex or block flow, to explicitly set an element's inner and outer layout mode. Also known as 2-value, multi-keyword, or multiple value syntax. Learn more.