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
:has() CSS relational pseudo-class
Select elements containing specific content. For example, `a:has(img)` selects all `<a>` elements that contain an `<img>` child.
CSS Relative colors
The CSS Relative Color syntax allows a color to be defined relative to another color using the `from` keyword and optionally `calc()` for any of the color values.
rel=noopener
Ensure new browsing contexts are opened without a useful `window.opener`
relList (DOMTokenList)
Method of easily manipulating rel attribute values on elements, using the DOMTokenList object (similar to classList).
attr api: ownerelement
document api: releasecapture
document api: releaseevents
focusevent api: relatedtarget
htmlareaelement api: rel
htmlareaelement api: rellist
htmlbrelement api
htmlformelement api: rel
htmlformelement api: rellist
htmlhrelement api
htmlhrelement api: align
htmlhrelement api: color
htmlhrelement api: size
htmlhrelement api: width
htmllinkelement api: rel
htmllinkelement api: rellist
htmlmeterelement api
htmlmeterelement api: high
htmlmeterelement api: low
htmlmeterelement api: min
htmlmeterelement api: optimum
location api: reload
mlgraphbuilder api: relu
navigation api: reload
rtcdatachannel api: reliable
svgaelement api: rel
svgaelement api: rellist
svgcursorelement api
svgfefuncrelement api
svgfilterelement api
svgfilterelement api: height
svgfilterelement api: href
svgfilterelement api: width
svgfilterelement api: x
svgfilterelement api: y
window api: releaseevents
html element: area: `target="_blank"` implies `rel="noopener"` behavior
html element: area: rel
html element: area: rel: noopener
html element: area: rel: noreferrer
html element: a: `target="_blank"` implies `rel="noopener"` behavior
html element: a: rel
html element: a: rel: noopener
html element: a: rel: noreferrer
svg element: a: rel
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