@media screen and (max-width:768px) {
  html{font-size: 50px;}
  .navbar > .container-fluid .navbar-brand{ margin: 0;height: 50px;padding: 5px 15px;}
  .navbar-toggle {margin-top: 10px;}
  .navbar-toggle .icon-bar {background-color: #888; }
  .banner {margin-top: 50px;}
  .index-about {padding: 0 0 30px 0;}
  .index-about > div {width: 100%;}
  .index-about .content {background: no-repeat center/cover; }













}