3. CSS Pseudo-class
CSS pseudo-classes are used to add special
effects to some selectors.
Selector Example LOVE | HATE
:link a:link
:visited a:visited
:hover a:hover
:active a:active
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6. CSS Media Types
The @media rule allows different style rules for
different media in the same style sheet.
See Responsive Design example:
CSS3: The Missing Manual
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