相关疑难解决方法(0)

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 100px;
  grid-auto-rows: 60px;
  grid-gap: 15px;
}

.col {
  background-color: tomato;
}

<div class="grid">
  <div class="col"></div>
  <div class="col"></div>
  <div class="col"></div>
  <div class="col"></div>
  <div class="col"></div>
</div>