1. 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

  2. CSS3 object-fit/object-position

    Method of specifying how an object (image or video) should fit inside its box. object-fit options include "contain" (fit according to aspect ratio), "fill" (stretches object to fill) and "cover" (overflows box but maintains ratio), where object-position allows the object to be repositioned like background-image does.

  3. css property: line-break: anywhere

  4. css property: overflow-wrap: anywhere

  5. css selector: nesting selector (`&`): `&` treated as `:where(:scope)` in `@scope` blocks

  6. css selector: `:where()`

  7. css selector: `:where()`: support for forgiving selector list

  8. css max-lines property