Technique C13:Using named font sizes
                     Description
                  
                  The objective of this technique is to specify a named font size that expresses the relative font size desired. These values provide hints so that the user agent can choose a font-size relative to the inherited font-size.
                     Examples
                  
                  Example 1: Named font sizes in CSS
This example selects a larger font size for strong elements so that their text will always be larger than the surrounding text, in whatever
                        context they are used. Assuming that headings and paragraphs use different font sizes,
                        the emphasized words in this example will each be larger than their surrounding text.
strong {font-size: larger}
...
<h1>Letting the <strong>user</strong> control text size</h1>
<p>Since only the user can know what size text works for him, 
it is <strong>very</strong> important to let him configure the text size.  
…
                  
                     Applicability
                  
                  CSS
                     Tests
                  
                  Procedure
- Check that the value of the CSS property that defines the font size is one of xx-small, xx-small, x-small, small, medium, large, x-large, xx-large, xsmaller, or larger.
Expected Results
- Check #1 is true