body.single-document {

  table {
    width: 100%;
    margin-bottom: 0px;
    box-shadow: none;
  }

  table th,
  table td,
  .wp-block-table td,
  .wp-block-table th {
    border: 1px solid black;
  }

  table thead th,
  table tfoot th {
    background-color: black;
  }

  table caption + thead tr:first-child th,
  table caption + thead tr:first-child td,
  table caption + thead tr:first-child th,
  table caption + thead tr:first-child td,
  table colgroup + thead tr:first-child th,
  table colgroup + thead tr:first-child td,
  table colgroup + thead tr:first-child th,
  table colgroup + thead tr:first-child td,
  table thead:first-child tr:first-child th,
  table thead:first-child tr:first-child td,
  table thead:first-child tr:first-child th,
  table thead:first-child tr:first-child td { border-top: 1px solid black; }

}