W3Schools Tryit Editor

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

.item8 {
  grid-area: 1 / 2 / 5 / 6;
}
</style>
</head>
<body>

<h1>The grid-area Property</h1>

<p>You can use the <em>grid-area</em> property to specify where to place an item.</p>

<p>The syntax is:</p>
<p>grid-row-start / grid-column-start / grid-row-end / grid-column-end.</p>

<p>Item8 will start on row-line 1 and column-line 2, and end on row-line 5 column-line 6:</p>

</body>
</html>