@font-face {
    font-family: ostrich;
    src: url('font/ostrich-regular.ttf')  format('truetype');
  }

#myVideo {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%; 
    min-height: 100%;
  }
  
  .contentIndex {
    bottom:0;
    position: fixed;
    background: rgba(0, 0, 0, 0.5);
    color: #f1f1f1;
    width: 100%;
    padding: 20px;
  }
  
  .content {
    top:0;
    position: fixed;
    background: rgba(0, 0, 0, 0.5);
    color: #f1f1f1;
    width: 100%;
    padding: 20px;
  }
  
  #myBtn {
    width: 200px;
    font-family: ostrich;
    font-size: 18px;
    padding: 10px;
    border: none;
    background: #111;
    color: #fff;
    cursor: pointer;
  }
  
  #myBtn:hover {
    background: #ddd;
    color: #333;
  }

  ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #111;
  }
  
  li {
    float: left;
  }
  
  li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }
  
  li a:hover {
    background-color: #333;
  }