/* Spaltenbreite */
.columnstyle {
  width: 600px;
  height: 600px;
  column-width: 200px;
}

/* Spaltenanzahl */
.columnstyle {
  width: 600px;
  height: 600px;
  column-count: 3;
}

/* Abstand und Trennlinie */
.columnstyle {
  width: 600px;
  height: 600px;
  column-count: 3;
  column-gap: 10px;
}


.columnstyle {
  width: 600px;
  height: 600px;
  column-count: 3;
  column-rule-color: red;
  column-rule-width: 1px;
  column-rule-style: dotted;
}