ul.social li {
    display: inline-block;
    width: 60px;
    height: 60px;
    overflow: hidden;
    line-height: 60px;
    background: #404040;
    border-radius: 100%;
		margin-bottom:.5em;
    -webkit-transition-duration: 0.7s;
    -moz-transition-duration: 0.7s;
    -o-transition-duration: 0.7s;
    transition-duration: 0.7s; }
    ul.social li:hover {
      background: #33cc99;
      box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3); }
      ul.social li:hover a {
        top: -60px; }
    ul.social li a {
      display: block;
      width: 100%;
      height: 200%;
      position: relative;
      top: 0;
      color: #33cc99;
      -webkit-transition: top 0.7s;
      -moz-transition: top 0.7s;
      -o-transition: top 0.7s;
      transition: top 0.7s; }
      ul.social li a:after {
        text-align: center;
        position: absolute;
        width: inherit;
        height: 50%;
        left: 0;
        bottom: 0;
        line-height: 60px;
        color: #404040; }