css3

Creating double border

You can easily create a double border with box-shadow property simply by doing this…

box-shadow:0 0 0 2px #2A0D0D, 0 0 0 4px #cf8a05;

Stripping HTML elements with all borders

If you know what is stripping something like a button, you realize that setting unequal borders results to an ugly element, so you can use box-shadow property

box-shadow: -5px 0 0 0 #39579b;