more than one class in html code example

Example 1: html add two classes

<a href="#" class="class1 class2">My Text</a>

Example 2: more than one class css

If you want two classes on one element, do it this way:
	<div class="social first"></div>

Reference it in css like so:
	.social.first {}

Example 3: more than one class in div

<!-- You can use multiple classes per element if you simply put spaces between the names: -->

<div class="c1 c2"> This div has two classes </div>