.sidebar {
    padding: 0;
    background-color: #143D73;
    position: relative;
    overflow: auto;
    min-height: 765px;
    max-height: 768px;
    box-shadow: 2px 3px 3px 2px rgba(0,0,0,0.1);
  }
  
  .sidebar a {
    display: block;
    color: #fff;
    padding: 16px;
    text-decoration: none;
  }
   
  .sidebar a.active {
    background-color: #d38200;
    color: white;
  }
  
  .sidebar a:hover:not(.active) {
    background-color: #d38200;
    color: white;
  }
  
  div.content {
    padding-top: 20px;
    padding-bottom: 20px;
    max-height: 900px;
  }
  div.reg_content {    
    padding: 20px 20px;   
  }
  @media screen and (max-width: 700px) {
    .sidebar {
      width: 100%;
      height: auto;
      position: relative;
    }
    .sidebar a {float: left;}
    div.content {margin-left: 0;}
  }
  
  @media screen and (max-width: 400px) {
    .sidebar a {
      text-align: center;
      float: none;
    }
  }