CSS Anchor Positioning

Allows placing elements anywhere on the page relative to an "anchor element", without regard to the layout of other elements besides their containing block

CSS overflow-anchor (Scroll Anchoring)

Changes in DOM elements above the visible region of a scrolling box can result in the page moving while the user is in the middle of consuming the content. By default, the value of `overflow-anchor` is `auto`, it can mitigate this jarring user experience by keeping track of the position of an anchor node and adjusting the scroll offset accordingly

csspositiontrydescriptors api: position-anchor

csspositiontrydescriptors api: positionanchor

css property: position-anchor

css property: position-visibility: anchors-visible