| org.w3c.dom.css.CSSRuleList | 
The CSSRuleList interface provides the abstraction of an
 ordered collection of CSS rules.
 
 The items in the CSSRuleList are accessible via an
 integral index, starting from 0.
 
See also the Document Object Model (DOM) Level 2 Style Specification.
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| The number of  CSSRulesin the list. | |||||||||||
| Used to retrieve a CSS rule by ordinal index. | |||||||||||
The number of CSSRules in the list. The range of valid
 child rule indices is 0 to length-1
 inclusive.
Used to retrieve a CSS rule by ordinal index. The order in this
 collection represents the order of the rules in the CSS style sheet.
 If index is greater than or equal to the number of rules in the list,
 this returns null.
| index | Index into the collection | 
|---|
index position in the
   CSSRuleList, or null if that is not a
   valid index.