Invalid CSS

border-color: gradient(...)

I would love to be able to add gradients to borders instead of using hacky workarounds.

Explore other not-so-valid CSS things

animation-repeat-period: 3s

display: visually-hidden

display: masonry

:wrapped { ... }

:stuck { ... }

collapsing: none

place: center

font-family: system-font

position-items: center

position: temporal

color: anthracite

float: top

My latest Last.fm tracks: Nirvana - Milk It Nirvana - Very Ape Nirvana - Dumb Nirvana - Frances Farmer Will Have Her Revenge on Seattle Nirvana - Rape Me