 <p>you can use firebug for firefox , it has a really useful way to inspect html elements ( or even scripts ) . what you are asking for is present in the computed styling section on the right once you click on the specified element after inspecting using firebug .</p> <p>you can find it at : <a href="https://getfirebug.com/" rel="nofollow">https://getfirebug.com/</a></p>