How to dynamically change the color of the selected menu item of a web page?

Question

I am new to developing web pages. I am looking to create menus similar to the ones in stackoverflow.com (like Questions, Tags, Users shown above). How do I change the color

Answer 1

Assuming you want to change the colour of the currently selected link/tab... you're best bet is to apply a class (say active) to the currently selected link/tab and then style this differently.

Example style could be:

li.active, a.active {
  background-color: #f90;
}