a.btn-social,
  .btn-social
  {
      border-radius: 50%;
      color: #ffffff !important;
      display: inline-block;
      height: 30px;
      line-height: 30px;
      margin: 8px 4px;
      text-align: center;
      text-decoration: none;
      transition: background-color .3s;
      webkit-transition: background-color .3s;
      width: 30px;
  }

  .btn-social .fa,.btn-social i
  {
      backface-visibility: hidden;
      moz-backface-visibility: hidden;
      ms-transform: scale(1);
      o-transform: scale(1);
      transform: scale(1);
      transition: all .25s;
      webkit-backface-visibility: hidden;
      webkit-transform: scale(1);
      webkit-transition: all .25s;
  }
  .btn-social:hover,.btn-social:focus
  {
      color: #fff;
      outline: none;
      text-decoration: none;
  }
  .btn-social:hover .fa,.btn-social:focus .fa,.btn-social:hover i,.btn-social:focus i
  {
      ms-transform: scale(1.3);
      o-transform: scale(1.3);
      transform: scale(1.3);
      webkit-transform: scale(1.3);
  }
  .btn-social.btn-xs
  {
      font-size: 9px;
      height: 24px;
      line-height: 13px;
      margin: 6px 2px;
      width: 24px;
  }
  .btn-social.btn-sm
  {
      font-size: 13px;
      height: 36px;
      line-height: 18px;
      margin: 6px 2px;
      width: 36px;
  }
  .btn-social.btn-lg
  {
      font-size: 22px;
      height: 72px;
      line-height: 40px;
      margin: 10px 6px;
      width: 72px;
  }


  .btn-facebook
  {
      background-color: #3b5998;
  }
  .btn-facebook:hover
  {
      background-color: #4c70ba;
  }
  .btn-github
  {
      background-color: #4183c4;
  }
  .btn-github:hover
  {
      background-color: #689cd0;
  }
  .btn-linkedin
  {
      background-color: #0976b4;
  }
  .btn-linkedin:hover
  {
      background-color: #0b96e5;
  }
  .btn-twitter
  {
      background-color: #55acee;
  }
  .btn-twitter:hover
  {
      background-color: #83c3f3;
  }
  .btn-youtube
  {
      background-color: #e52d27;
  }
  .btn-youtube:hover
  {
      background-color: #ea5955;
  }
  .btn-email
  {
      background-color: #44c456;
  }
  .btn-email:hover
  {
      background-color: #6bd079;
  }
  .btn-scholar
  {
      background-color: #ff7300;
  }
  .btn-scholar:hover
  {
      background-color: #ff7300;
  }