CSS Descriptors

Alphabetical list of CSS at-rule descriptors.

additive-symbols
bleed
fallback
font-family
font-feature-settings
font-style
font-weight
font-stretch
font-variant
marks
negative
pad
prefix
range
speak-as
suffix
symbols
system
unicode-range

About CSS At-Rule Descriptors

Some CSS at-rules accept values in the form of descriptors.

A descriptor is a declaration, of which has a name, a value consisting of a list of component values, and an !important flag which is initially unset.

CSS descriptors typically look similar to CSS properties but the two are not to be confused. A descriptor is used within an at-rule for the purposes of setting a declaration within that at-rule. Properties typically appear in qualified rules, while descriptors appear in at-rules.