1If you want two classes on one element, do it this way:
2 <div class="social first"></div>
3
4Reference it in css like so:
5 .social.first {}
1To specify multiple classes, separate the class names with a space,
2e.g. <span class="classA classB">.
3This allows you to combine several CSS classes for one HTML element.
1<!-- You can use multiple classes per element if you simply put spaces between the names: -->
2
3<div class="c1 c2"> This div has two classes </div>