pma/themes/original/scss/_tables.scss

.table {
  border-collapse: separate;
  caption-side: top;

  td {
    touch-action: manipulation;
    vertical-align: middle;
  }

  th {
    background-color: $th-background;
  }

  th,
  td {
    > span:empty::before {
      content: "\200b";
    }
  }

  thead th {
    border-bottom: 0;
  }

  caption {
    background-color: $table-head-bg;
    font-weight: bold;
    text-align: center;
  }
}

.table-striped {
  > tbody > tr:nth-of-type(#{$table-striped-order}) > th {
    --#{$variable-prefix}table-accent-bg: #d3dce3;
  }
}

@media only screen and (min-width: 768px) {
  .table th.position-sticky {
    top: 49px;
  }
}