public interface CSSStyleSheet extends StyleSheet
CSSStyleSheet interface is a concrete interface used to
 represent a CSS style sheet i.e., a style sheet whose content type is
 "text/css".
 See also the Document Object Model (DOM) Level 2 Style Specification.
| Modifier and Type | Method and Description | 
|---|---|
| void | deleteRule(int index)Used to delete a rule from the style sheet. | 
| CSSRuleList | getCssRules()The list of all CSS rules contained within the style sheet. | 
| CSSRule | getOwnerRule()If this style sheet comes from an  @importrule, theownerRuleattribute will contain theCSSImportRule. | 
| int | insertRule(String rule,
          int index)Used to insert a new rule into the style sheet. | 
getDisabled, getHref, getMedia, getOwnerNode, getParentStyleSheet, getTitle, getType, setDisabledCSSRule getOwnerRule()
@import rule, the
 ownerRule attribute will contain the
 CSSImportRule. In that case, the ownerNode
 attribute in the StyleSheet interface will be
 null. If the style sheet comes from an element or a
 processing instruction, the ownerRule attribute will be
 null and the ownerNode attribute will
 contain the Node.CSSRuleList getCssRules()
int insertRule(String rule, int index) throws DOMException
rule - The parsable text representing the rule. For rule sets
   this contains both the selector and the style declaration. For
   at-rules, this specifies both the at-identifier and the rule
   content.index - The index within the style sheet's rule list of the rule
   before which to insert the specified rule. If the specified index
   is equal to the length of the style sheet's rule collection, the
   rule will be added to the end of the style sheet.DOMException - HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the
   specified index e.g. if an @import rule is inserted
   after a standard rule set or other at-rule.
   void deleteRule(int index)
         throws DOMException
index - The index within the style sheet's rule list of the rule
   to remove.DOMException - INDEX_SIZE_ERR: Raised if the specified index does not correspond to
   a rule in the style sheet's rule list.
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