CSS Grid布局-项目跨行

<style>
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 100px);
    gap: 10px;
    background-color: #e8e8e8;
    padding: 10px;
  }
  .grid-item {
    background-color: #2196F3;
    border: 1px solid #000;
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .grid-item:nth-child(1) {
    grid-row: 1 / 3;
    background-color: #4CAF50;
  }
  .grid-item:nth-child(4) {