CSS does wonderful things for html, especially with it's ability to create advanced links between styles and tags.
Here's an example where it can reference multiple classes to multiple tags, mix and match style.
.class1 {
...
}
.class2 {
...
}
.class3 {
...
}
[tag3 class="class2 class3" /]
Another good thing to keep in mind is how to apply classes to nested tags:
before:
[tag2 class="class2"]
[/tag1]
after:
[/tag1]
Doesn't work 100% everywhere, use trial and error.

