 takes 
 precedence over a normal declaration. Override, author, and user style 
 sheets all may contain "!important" declarations. User "!important" rules 
 take precedence over both override and author "!important" rules, and 
 override "!important" rules take precedence over author "!important" 
 rules. 
 <p> The expectation is that an instance of the <code>DocumentCSS</code> 
 interface can be obtained by using binding-specific casting methods on an 
 instance of the <code>Document</code> interface. 
 <