i.fa {
  width: 32px;
  height: 32px;
  text-align: center;
  line-height: 32px;
  border-radius: 50%;
  color: #fff;
}

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

.fa-google-plus {
  background: #D8493B;
}

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

.fa-pinterest-p {
  background: #CA232D;
}