CSS font-stretch

If a font has multiple types of variations based on the width of characters, the `font-stretch` property allows the appropriate one to be selected. The property in itself does not cause the browser to stretch to a font.

:has() CSS relational pseudo-class

Select elements containing specific content. For example, `a:has(img)` selects all `<a>` elements that contain an `<img>` child.

:in-range and :out-of-range CSS pseudo-classes

If a temporal or number `<input>` has `max` and/or `min` attributes, then `:in-range` matches when the value is within the specified range and `:out-of-range` matches when the value is outside the specified range. If there are no range constraints, then neither pseudo-class matches.

::selection CSS pseudo-element

The ::selection CSS pseudo-element applies rules to the portion of a document that has been highlighted (e.g., selected with the mouse or another pointing device) by the user.

CSS3 font-kerning

Controls the usage of the kerning information (spacing between letters) stored in the font. Note that this only affects OpenType fonts with kerning information, it has no effect on other fonts.

cssfontfeaturevaluesmap api: has

css property: text-emphasis-color

css property: text-emphasis-position

css property: text-emphasis-position: auto

css property: text-emphasis-position: left

css property: text-emphasis-position: over

css property: text-emphasis-position: right

css property: text-emphasis-position: under

css property: text-emphasis-style

css property: text-emphasis-style: circle

css property: text-emphasis-style: dot

css property: text-emphasis-style: double-circle

css property: text-emphasis-style: filled

css property: text-emphasis-style: none

css property: text-emphasis-style: sesame

css property: text-emphasis-style: triangle

css selector: `:has-slotted`

css 2.1 aural

css @apply rule