<div class="wrapper">
<div class="box header">Header</div>
<div class="box sidebar">Sidebar</div>
<div class="box content">Content</div>
</div>
body {
margin: 40px;
}
.sidebar {
grid-area: sidebar;
}
.content {
grid-area: content;
}
.header {
grid-area: header;
}
.wrapper {
display: grid;
grid-gap: 10px;
grid-template-columns: 1fr 1fr 1fr;
grid-auto-rows: minmax(150px, auto);
grid-template-areas:
"sidebar header header"
"sidebar content content"
"sidebar content content";
background-color: #fff;
color: #444;
}
.box {
background-color: #444;
color: #fff;
border-radius: 5px;
padding: 20px;
font-size: 150%;
}
.header {
background-color: #999;
}
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