demo · v135

Double-nested pseudo stage

Chrome 135 finally allows pseudo-elements to nest: ::before::first-letter, ::marker::first-letter, and friends. This stage renders a numbered list where each counter has its first character styled independently — impossible before because the spec didn’t allow chaining.

nested pseudo: ?
  1. Reduce, reuse, recycle.
  2. Refactor when it hurts, not because it might.
  3. Read the spec, then the source, then ask.
  4. Recover gracefully or fail loudly.

the CSS

see also