<div class="box">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item"><code>grid-row:<br> 1 / 3;</code></div>
  <div class="item">7</div>
  <div class="item">8</div>
</div>
.box {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-gap: 1px;
}

.box .item {
  background-color: tomato;
  color: white;
  font-size: 1.4em;
  font-family: monospace;
  padding: 16px;
  text-align: center;
}

.box .item:nth-child(6) {
  grid-row: 1 / 3;
  background: gold;
}

External CSS

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External JavaScript

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