WPT details: https://wpt.fyi/results/css/css-overscroll-behavior/overscroll-behavior-logical.html
Adds CSS flow-relative properties for controlling overscroll behavior through logical dimensions. flow-relative properties are those that are interpreted relative to the flow of content. The new properties are overscroll-behavior-inline and overscroll-behavior-block.
Docs: https://drafts.csswg.org/css-overscroll-behavior-1/#overscroll-behavior-longhands-logical