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9 What Is CSS?
A style sheet that??™s linked with rel="stylesheet" but lacks a title attribute, like
the first example in this section, is known as a persistent style sheet. It will always
be applied??”even if an alternative style sheet is enabled by the user.
A style sheet that??™s linked with rel="stylesheet", and for which a title attribute
has been specified, is known as a preferred style sheet. It will be applied unless
the user has enabled an alternative style sheet.
Let??™s take a look at a more complex example:
href="/base.css" media="all">
href="/def_layout.css" media="screen" title="Default">
href="/def_colour.css" media="screen" title="Default">
href="/alt_layout.css" media="screen" title="Custom">
href="/alt_colour.css" media="screen" title="Custom">
href="/print.


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