W3School TIY Editor

<!DOCTYPE html>
<html>
<head>
<style>
.grid-container {
  display: grid;
  grid-template-columns: auto auto 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 3;
}
</style>
</head>
<body>

<h1>grid-column 属性：</h1>

<p>请使用 <em>grid-column</em> 属性规定在何处放置项目。</p>

<p>Item1 将在 column-line 1 开始，并横跨三列：</p>

</body>
</html>