@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"); /* Using a url */

.fa {
  padding: 20px;
  font-size: 30px;
  width: 50px;
  text-align: center;
  text-decoration: none;
}

/* Add a hover effect if you want */
.fa:hover {
  opacity: 0.7;
}