<div class="container">
  <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>
.container {
  display: grid;
  grid-template-columns: auto auto;
  
  gap: 10px 20px;
}

.item {
  font-family: Georgia, "Times New Roman", Times, serif;
  font-size: x-large;
  text-align: center;
  padding: 20px;
  border: 1px solid orange;
  background-color: bisque;
}
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