Change background on button click, using CSS only?

Question

Is it possible to change the background color on button click; of the entire document, using only CSS and HTML5?

(e.g.: it\'s trivial in Ja

Answer 1

There is a way to do it:

.cc2:focus {
background-color: #19A3FF;}

The :focus basically means when you click on the element with the class cc2 it will turn it's background blue :) Hope that helps.