Invalid CSS

CSS declarations that are not valid and that I wish existed.

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collapsing: none

collapsing: none is an invalid CSS declaration I wish existed.
See declaration

place: center

place: center is an invalid CSS declaration I wish existed.
See declaration

font-family: system-font

font-family: system-font is an invalid CSS declaration I wish existed.
See declaration

position-items: center

position-items: center is an invalid CSS declaration I wish existed.
See declaration

position: temporal

position: temporal is an invalid CSS declaration I wish existed.
See declaration

color: anthracite

color: anthracite is an invalid CSS declaration I wish existed.
See declaration

float: top

float: top is an invalid CSS declaration I wish existed.
See declaration