body{
  background:#efdec1;
  font-size:  14px;
  font-family: Verdana, sans-serif;
}

  .container{
    width: 400px;
    margin: 8px auto;
    background: #fff;
    border-radius:4px;
    padding: 16px;
    position: relative;

  }


  #result{
    font-size: 2rem;
    color: red;
  }

  .hidden{
    display: none;
  }