CssRuleType
The set of possible CSS rules.
Charset = 2
Defines a @charset rule.
CounterStyle = 11
The @counter-style rule for styling counters.
Document = 13
Changing document (location) specific rules with @document.
FontFace = 5
This is for defining @font-face rule.
FontFeatureValues = 14
This @font-feature-values is still very complicated.
Import = 3
The @import rule.
Keyframe = 8
Keyframes require one or more @keyframe rule(s) to be used.
Keyframes = 7
For animations @keyframes is very important.
Media = 4
An @media rule.
Namespace = 10
Declaring namespaces is possible @namespace.
Page = 6
In printing we require the @page rule.
RegionStyle = 16
Creating a CSS region with @region.
Style = 1
A standard style rule.
Supports = 12
Checking for CSS support using @support.
Unknown = 0
The rule is not known and cannot be used.
Viewport = 15
Defines the @viewport rule for responsive design.