Sometimes you would hover over a text or picture, or any element on the screen and it would have some kind of reaction. Whether the reaction is a difference in background, it glowing, or popping out, this all can be done with some simple CSS tricks.
Let's start by calling our element a p div
Lets say when you hover over you want its background to change from transparent to blue. All you would have to write in your CSS is add the: hover attribute for example like this.