<div class="container">
  <div class="grid">
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
  </div>
</div>
.container {
  max-width: 600px;
  margin: 0 auto;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 10px;
  row-gap: 15px;
}

.item {
  height: 30px;
  background: red;
}

External CSS

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External JavaScript

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