Technique C13:Using named font sizes

Applicability

CSS

This technique relates to:

1.4.4: Resize text (Sufficient when used with Ensuring that text containers resize when the text resizes AND using measurements that are relative to other measurements in the content by using one or more of the following techniques: Techniques for relative measurements)
1.4.5: Images of Text (Advisory)
1.4.8: Visual Presentation (Sufficient when used with G146: Using liquid layout)
1.4.9: Images of Text (No Exception) (Advisory)

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.  
…

Other sources

No endorsement implied.

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