.custom-social-icons .icon_holder {
  display: inline-block;
  position: relative;
}

.custom-social-icons a i {
  font-size: 17px;
  line-height: .75em;
  vertical-align: -15%;
  color: #818181;
  -webkit-transition: all .3s ease 0s;
  -moz-transition: all .3s ease 0s;
  -o-transition: all .3s ease 0s;
  transition: all .3s ease 0s;
  margin-right: 16px;
}



.custom-social-icons .fa-facebook-f:before, 
.custom-social-icons .fa-facebook:before {
  content: "\f09a";
}
.custom-social-icons .fa-youtube:before {
  content: "\f167";
}
.custom-social-icons .fa-linkedin:before {
  content: "\f0e1";
}