Board Thread:Support Requests - Getting Technical/@comment-25386934-20150513021547/@comment-17725354-20150513030625

You can change the look of a button when it is hovered over with the  selector. For example:

.my-button { background-color:blue; color:white; }

.my-button:hover { background-color:red; color:black; }

In this example, the  element will originally have a blue background and white text. When it is hovered over, it will have a red background and black text.

See also: http://www.w3schools.com/cssref/sel_hover.asp