Given markup like this:
<article data-text="foo">
<h2>Lorem ipsum dolor sit amet</h2>
<p>Consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et...</p>
</article>
is it possible to use the data-text attribute in CSS on the children of article?
h2:before {
content: attr(data-text) ': ';
}