My code:
<!DOCTYPE html>
<html>
<head>
<title>CSS Grid Item Placement</title>
<style>
.grid {
display: grid;
background-color: #d6d1f5;
padding: 20px;
grid-template-columns: [start] auto [line2] auto [line3] auto [end];
}
.item {
background-color: #E7E4F8;
border: 1px solid black;
padding: 20px;
text-align: center;
}
.item-x {
background-color: #ED639E;
grid-area:2 / 2 / 4 / 3;
/grid-column-end: line3;*/
/*grid-row: 2/span 2;*/
/*grid-row-end: span 2;/
}
</style>
</head>
<body>
<div class="grid">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item item-x">4</div>
<div class="item">5</div>
<div class="item">6</div>
<div class="item">7</div>
<div class="item">8</div>
<div class="item">9</div>
</div>
</body>
</html>
