canvas {
      display: block;
    }

    #pdf-container {
      margin-left: 30px;
      position:relative;
      float: inline-end;
    }

    .link-overlay {
      position: absolute;
      cursor: pointer;
      /* デバッグ用のボーダー */
      /* border: 2px solid rgba(0, 0, 255, 0.2); */
    }