.fa {
    padding: 10px;
    font-size: 20px;
    text-align: center;
    text-decoration: none;
    margin: 5px 2px;
    border-radius: 100%;
}

.fa:hover {
    opacity: 0.7;
}

.fa-facebook {
  background: #3B5998;
  color: white;
}

.fa-twitter {
  background: #55ACEE;
  color: white;
}

.fa-google {
  background: #dd4b39;
  color: white;
}
.fa-whatsapp
{
    background:#4caf50 !important;
    color: white;
}