如果有足够的空间，我如何将div列表拆分为两列？

<div class="container">
  <div class="item">Item 1</div>
  <div class="item">Item 2</div>
  <div class="item">Item 3</div>
  <div class="item">Item 4</div>
  <div class="item">Item 5</div>
</div>

.container {
  display: flex;
  flex-wrap: wrap;
}

.item {
  width: 50%;
}

<div class="container">
  <div class="item">Item 1</div>
  <div class="item">Item 2</div>
  <div class="item">Item 3</div>
  <div class="item">Item 4</div>
  <div class="item">Item 5</div>
</div>

.container {
  display: grid;
  grid-template-columns: 50% 50%;
}