* Show example

Font weight [font-weight]

   The property font-weight describes how bold or "heavy" a font should be
   presented. A font can either be normal or bold. Some browsers even
   support the use of numbers between 100-900 (in hundreds) to describe
   the weight of a font.

        p {font-family: arial, verdana, sans-serif;}
        td {font-family: arial, verdana, sans-serif; font-weight: bold;}
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     * Show example

   There is one key difference between the four units above. The units
   'px' and 'pt' make the font size absolute, while '%' and 'em' allow the
   user to adjust the font size as he/she see fit. Many users are
   disabled, elderly or simply suffer from poor vision or a monitor of bad
   quality. To make your website accessible for everybody, you should use
   adjustable units such as '%' or 'em'.

   Below you can see an illustration of how to adjust the text size in
   Mozilla Firefox and Internet Explorer. Try it yourself - neat feature,
   don't you think?