devdocs/assets/stylesheets/pages/_jq.scss

._jq {
  @extend %simple;

  .manual-example table {
	  border: none;

	  & td {
		  @extend %pre;
		  &.jqprogram { font-weight: bold; }
		  border: none;
	  }

	  & th {
		  color: var(--textColor);
		  background: var(--contentBackground);
		  text-align: right;
		  border: none;
	  }

	  & tr:not(:first-child) th:not(:empty) {
		  &, & + td {
			  border-top: 1px solid var(--boxBorder);
		  }
	  }
  }
}