Firebug Tool

  • A free and open source web development tool
  • Useful for debugging, editing, and monitoring CSS
  • Identifies the rules that cascade together to style each element of a page

Firebug CSS Support

  • Rules are sorted in the order of precedence
  • Properties that have been overridden are stricken out
  • Each rule has a link back to the file from where it came

Firebug CSS Usage

  • A Firebug extension
  • Useful for viewing which CSS rules are actually used