.sidebar {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;    
    left: 0;
    background-color: #ffffff;
    overflow-x: hidden;    
    padding-top: 60px;
  }
  
  .sidebar a {    
    display: block;    
  }  
  
  .sidebar .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
  }
  
  .openbtn {
    font-size: 20px;
    cursor: pointer;
    background-color: #111;
    color: white;
    padding: 10px 15px;
    border: none;
  }
  
  .openbtn:hover {
    background-color: #444;
  }
  
  #main {    
    padding: 16px;
  }