css grid 宫格布局
示例代码：
<div class="grid-container"><div class="grid-item1">1</div><div class="grid-item2">2</div><div class="grid-item3">3</div><div class="grid-item4">4</div><div class="grid-item5">5</div>
</div><style>
.grid-container {display: grid;grid-template-columns: auto auto auto;grid-gap: 10px;padding: 10px;background-color: #2196F3;
}.grid-item1 {background-color: rgba(255, 255, 255, 0.8);border: 1px solid #888;padding: 20px;font-size: 30px;text-align: center;
}.grid-item2 {background-color: rgba(255, 255, 255, 0.8);border: 1px solid #888;padding: 20px;font-size: 30px;text-align: center;
}.grid-item3 {background-color: rgba(255, 255, 255, 0.8);border: 1px solid #888;padding: 20px;font-size: 30px;text-align: center;
}.grid-item4 {background-color: rgba(255, 255, 255, 0.8);border: 1px solid #888;padding: 20px;font-size: 30px;text-align: center;
}.grid-item5 {background-color: rgba(255, 255, 255, 0.8);border: 1px solid #888;padding: 20px;font-size: 30px;text-align: center;
}
</style>