Answers for "grid defined rows auto cololumns"

grid defined rows auto cololumns

#container {
  display: grid;
  grid-template-rows: 1fr 1fr 1fr; //3 rows
  grid-auto-flow: column;
}

<div id="container">
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
  <div>5</div>
  <div>6</div>
  <div>7</div>
  <div>8</div>
  <div>9</div>
</div>