小库网

<style>

.grid-container {

  display: grid;

  grid-template-columns: auto auto auto auto;

  grid-gap: 10px;

  background-color: #2196F3;

  padding: 10px;

}

​

.grid-container > div {

  background-color: rgba(255, 255, 255, 0.8);

  text-align: center;

  padding: 20px 0;

  font-size: 30px;

}

​

.item1 {

  grid-column: 1 / span 2;