<!DOCTYPE html>
<style>
body {
-webkit-writing-mode: vertical-lr;
}
.multicol {
height: 500px;
width: 200px;
border: 3px solid black;
-webkit-column-gap: 10px;
-webkit-column-count: 3;
line-height: 20px;
}
.left, .right {
padding: 10px 0;
height: 40px;
text-align: center;
box-sizing: border-box;
}
.left { float: left; }
.right { float: right; }
.tall { width: 220px; }
.xtall { width: 420px; }
.blue1 { background-color: skyblue; }
.blue2 { background-color: dodgerblue; }
.blue3 { background-color: steelblue; }
</style>
<div class="multicol">
First<br>
First<br>
<div class="right tall blue1">F2</div>
First<br>
First<br>
<div class="left xtall blue2">F1</div>
First<br>
First<br>
First<br>
First<br>
First<br>
First<br>
Second<br>
Second<br>
<div class="left tall blue3">F3</div>
Second<br>
Second<br>
Second<br>
Second<br>
Second<br>
Second<br>
Second<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
Third<br>
</div>