<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">6</div>
  <div class="item">7</div>
  <div class="item">8</div>
  <div class="item">9</div>
</div>
.box {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-column-gap: 42px;
  grid-row-gap: 2px;
  padding-top: 25px;
}

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

.box .item:nth-child(1),
.box .item:nth-child(2) {
  position: relative;
}

.box .item:nth-child(1)::after,
.box .item:nth-child(2)::after {
  content: "42px";
  display: block;
  position: absolute;
  top: 10px;
  right: -41px;
  color: #111;
  font-size: .87em;
}

External CSS

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External JavaScript

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