*, *:before, *:after {
  -webkit-box-sizing:border-box;
  -moz-box-sizing:border-box;
  box-sizing:border-box;
}

.btn-nav {
  background-color:rgba(255,255,255,0.5);
  border:1px solid #e0e1db;
  -webkit-box-sizing:border-box;
  -moz-box-sizing:border-box;
  box-sizing:border-box;
}

.btn-nav:hover {
  color: #04a7d6;
  cursor:pointer;
  -webkit-transition:color 1s;
  transition:color 0.3s;
}

.btn-nav .glyphicon {
  padding-top:16px;
  font-size:40px;
}

@media (max-width: 480px) {
  .btn-group {
    display:block !important;
    float:none !important;
    width:100% !important;
    max-width:100% !important;
  }
}

@media (max-width: 600px) {
  .btn-nav .glyphicon {
    padding-top:12px;
    font-size:26px;
  }
}