<!DOCTYPE html>
<html>
<head>
<style>
.item3 { grid-column: auto / span 2; }
.grid-container {
display: grid;
grid-template-columns: auto auto auto;
grid-template-rows: 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;
}
</style>
</head>
<body>
<h1>The grid-auto-flow Property</h1>
<p>The <em>grid-auto-flow</em> property controls how auto-placed items are inserted in the grid.</p>
<p>This grid has three columns and two rows.</p>
<p>"item3" spans two columns, where will the other items be inserted?.</p>
<h2>grid-auto-flow: row</h2>
<div class="grid-container" style="grid-auto-flow: row;">
<div class="item1">1</div>
<div class="item2">2</div>
<div class="item3">3</div>
<div class="item4">4</div>
</div>
<h2>grid-auto-flow: row dense</h2>
<p>The "dense" value fills holes in the grid:</p>