CSS Fix button background padding when font size is 0

Fix button background padding when font size is 0 using CSS text-indent.

.button
{
  width: 16px;
  height: 16px;
  background-image: url('image.png');
  background-repeat: no-repeat;
  border: 0px;
  cursor: pointer;
  text-indent: -9000px;
}