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We could of course redefine the anchor??™s CSS properties ourselves; as we
already know, declarations in an author style sheet will overwrite the same
declarations in a user agent style sheet.
As you can see, the cascade works very well, and once you understand where the
styles are coming from, you can control them much more easily.
CSS Inspectors
Many useful tools are available for analyzing the document and identifying exactly
where the styles on the page are coming from; they??™ll also help you comprehend
this subject. One such tool for the Firefox browser is an extension called Firebug.4
Similar extensions are available for Safari,5 Opera,6 and Internet Explorer.7
!important Declarations
During the importance and origin calculation in step two of the cascade resolution
process, the !important statement can be used to add weight to a declaration. A
declaration appended with the ! operator followed immediately by the keyword
important, is said to be an important declaration, rather than a normal declaration.


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