#letters {
      z-index: 1;
      width:400px;
      height:500px;
      border: 1px solid black;
    }
    #h1{
      z-index: 2;
      position: absolute;
      top:20px;
      left: 180px;
      width: 20px;
      height: 80px;
      background-color: black;
    }
    #h2{
      z-index: 2;
      position: absolute;
      top:40px;
      left: 180px;
      width: 50px;
      height: 20px;
      background-color: black;
    }
    #h3{
      z-index: 2;
      position: absolute;
      top:40px;
      left: 220px;
      width: 20px;
      height: 60px;
      background-color: black;
    }