der {
        position: relative;
        width: 300px;
        height: 400px;
        border: 1px solid #000;
        background-color: #CCC;
      }
      #part1, #part2 {
        display: none;
      }
      .runner {
        font-variant: small-caps;
        font-size: 87%;
        color: #900;
      }
      .bookTitle {
        position: absolute;
        top: 1%;
        width: 100%;
        text-align: center;
        cursor: pointer;
      }
    </style>

    <script src="../../dist/scripts/monocore