Contextual Usage

When CSS Base is included in a page it applies rules to all HTML elements via type selectors like this: h1 {margin-bottom:1em;}. An alternate version, cssbase-context.css, uses only descendent selectors like this: .yui3-cssbase-context h1 {margin-bottom:1em;}. This means you can put that class value on a node in your document to choose which region(s) of your page CSS Base will be applied to.

<div class="yui3-cssbase">
    <p>Everything within this container will have CSS Base applied.</p>
</div>

Note:

Because CSS examples are susceptible to other CSS on the page, this example is only available in a new window at the above link.