Cacher is the code snippet organizer for pro developers

a[href^='//']:before,
a[href^='http://']:before,
a[href^='https://']:before {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  margin: 0 .5rem 0 0;
  background-image: url('http://bit.ly/290LftQ');
  background-size: contain;
  content: '';
}