代码示例：（标识：cssref_grid-gap_2）
<!DOCTYPE html>
<html>
<head>
<style>
.grid-container {
display: grid;
grid-template-columns: auto auto auto auto;
grid-gap: 20px 50px;
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;
}
</style>
</head>
<body>
<h1>grid-gap 属性</h1>
<p>请使用 <em>grid-gap</em> 属性来规定列间隙和行间隙的尺寸。</p>
<p>这个网格的行间隙为 20px，列间隙为 50px：</p>
<div class="grid-container">
<div class="item1">1</div>
<div class="item2">2</div>
<div class="item3">3</div>
<div class="item4">4</div>
<div class="item5">5</div>
<div class="item6">6</div>
<div class="item7">7</div>
<div class="item8">8</div>
<div class="item9">9</div>
<div class="item10">10</div>
<div class="item11">11</div>
<div class="item12">12</div>
</div>
</body>
</html>
