<html>
<head>
<style>
.grid-container {
display: grid;
grid-template-columns: auto auto auto auto;
grid-gap: 12px;
background-color: #00ab55;
padding: 12px;
}
.grid-container > div {
background-color: rgba(255, 255, 255, 0.8);
text-align: center;
padding: 12px 0;
}
.box1 {
grid-column: 1 / span 2;
}
</style>
</head>
<body>
<h1>The grid-column Property</h1>
<div class="grid-container">
<div class="box1">1</div>
<div class="box2">2</div>
<div class="box3">3</div>
<div class="box4">4</div>
<div class="box5">5</div>
<div class="box6">6</div>
<div class="box7">7</div>
</div>
</body>
</html>