-height: calc(100% - 173px);
          overflow: auto;
          padding-bottom: 100px;
      }

      .ddoc .content_wrapper {
          background-color: rgba(242, 242, 242, 1);
          margin: 0 auto;
          max-width: 980px;
      }

      .ddoc .section {
        padding: 15px 25px 30px;
      }

      .ddoc .section .section {
        margin: 30px 0 0;
        padding: 0;
      }

      .ddoc .para {
        color: rgba(65, 65, 65, 1);
        font-size: 1.4em;
        line