<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
.grey-container {
height: 250px;
width: 250px;
display: grid;
grid-gap: 20px;
grid-template: repeat(4, 1fr) / repeat(2, 1fr);
grid-auto-flow: row dense;
background-color: #ccc;
padding: 10px;
}
.box1 {
background-color: #0ad6e0;
grid-row-start: 3;
}
.box2 {
background-color: #841c72;
}
.box3 {
background-color: #827c7c;
}
.box4 {
grid-column-start: 2;
background-color: #4cbb13;
}
</style>
</head>
<body>
<div class="grey-container">
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>