Vorlage:Test-Styles.css

.wikitable3 > tbody > tr > td {
  float: left;
  text-align:left;
  padding-left: 2px;
  vertical-align: top;
  width: 33.3%;
  border-left: 1px solid #a2a9b1; /* Rand links zeichnen */
  border-right: 1px solid #a2a9b1; /* Rand rechts zeichnen */
  border-top: 1px solid #a2a9b1; /* Rand oben dünn zeichnen */
  border-bottom: 1px solid #a2a9b1; /* Rand unten durch Hintergrundfarbe ausblenden */
  }

.table-head {
  border: 2px solid green;
  background: lightgoldenrodyellow;
}

.table { 
   display: table;
   border-spacing: 0.5em;
}

.table-cell {display: table-cell; border: 1px solid grey;}

.table-row {display: table-row; border: 1px solid red;}

.table-row:first-child {
 width: 100%;
}