* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    background-color: black;
    font-family: Arial;
    font-size: 17px;
  }
  
  #myVideo {
    position: fixed;
    margin: auto;
    width: 100%;
    /* right: 0; */
    /* bottom: 0; */
    min-width: 100%;
    min-height: 100%;
}
  
  .content {
    position: fixed;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    color: #f1f1f1;
    width: 100%;
    padding: 20px;
  }
  
  #myBtn {
    width: 200px;
    font-size: 18px;
    padding: 10px;
    border: none;
    background: #000;
    color: #fff;
    cursor: pointer;
  }
  
  #myBtn:hover {
    background: #ddd;
    color: black;
  }