CSSCharsetRule Represents the CSS @charset rule.

 CSSColorProperty More Information: https://developer.mozilla.org/en-US/docs/Web/CSS/color

 CSSDocumentRule Contains the rules specified by a @document { /* ... */ } rule.

 CSSFontFaceRule Represents the @font-face rule.

 CSSImportRule Represents a CSS import rule.

 CSSKeyframeRule Represents a CSS @keyframe rule.

 CSSKeyframesRule Represents an @keyframes rule.

 CSSMediaRule Represents a CSS @media rule.

 CSSMedium Represents a medium rule. More information available at: http://www.w3.org/TR/css3-mediaqueries/

 CSSNamespaceRule Represents an @namespace rule.

 CSSPageRule Represents the @page rule.

 CSSProperty Fore more information about CSS properties see http://www.w3.org/TR/CSS21/propidx.html.

 CSSRuleList Represents an array like structure containing CSS rules.

 CSSShapeValue Represents a CSS shape. https://developer.mozilla.org/en-US/docs/Web/CSS/shape

 CSSStyleRule Represents a CSS style rule.

 CSSStyleSheet Represents a CSS Stylesheet.

 CSSSupportsRule Represents an @supports rule.

 CSSTextDecorationColorProperty More Information: https://developer.mozilla.org/en-US/docs/Web/CSS/text-decoration-color

 CSSValue Represents a CSS value.

 CSSVerticalAlignProperty Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/vertical-align

 Point2d Represents a point value consisting of two lengths.

 AnimationDirection The enumeration over all possible animation direction values.

 AnimationFillStyle An enumeration over all possible fill-mode values.

 BackgroundAttachment An enumeration with all background attachment settings.

 BackgroundRepeat The enumeration over all possible repeat values.

 BorderRepeat The enumeration over all possible border repeat values.

 BoxModel An enumeration with the various box sizing models / clip or origins.

 BreakMode An enumeration over all possible break modes.

 ClearMode The enumeration with all possible clear modes.

 CssRuleType The set of possible CSS rules.

 CssValueType This enumeration is indicating which type of unit applies to the value.

 DisplayMode A list of all pre-defined display settings.

 Floating All possible values for taking an element out of its normal flow.

 FontStretch An enumeration with possible font stretch settings.

 FontStyle The enumeration with the various font styles.

 FontVariant An enumeration with font variant transformations.

 LineStyle An enumeration with all possible line styles.

 ListPosition An enumeration over all list positions.

 ListStyle An enumeration over possible list styles.

 PlayState An enumeration over all various play states.

 SystemCursor A list of all pre-defined system cursor modes.

 TextDecorationLine An enumeration that defines the various line styles.

 TextDecorationStyle An enumeration with the various text decoration styles.

 TextTransform An enumeration with all possible text transformations.

 UnicodeMode An enumeration with various unicode modes.

 Whitespace An enumeration with the various whitespace handling modes.

 CSSCalcValue Gets a computed value. Could also be just an absolute or relative value.

 CSSConditionRule Represents the abstract base class for CSS media and CSS supports rules.

 CSSGroupingRule Represents the CSSGroupingRule interface.

 CSSImageValue More information about the image module: http://dev.w3.org/csswg/css-images-3/

 CSSRule Represents a CSS rule.

 CSSTimingValue Represents a timing-function in CSS. http://dev.w3.org/csswg/css-transitions/#transition-timing-function

 CSSTransformValue Represents a transformation in CSS. https://developer.mozilla.org/en-US/docs/Web/CSS/transform#CSS_transform_functions

 Selector Represents a CSS selector as specified in http://dev.w3.org/csswg/selectors4/