<!DOCTYPE html>
<style>
.test { position: absolute; }
.pos1 { left: 50px; top: 50px;}
.pos2 { left: 250px; top: 50px;}
.pos3 { left: 50px; top: 300px;}
.multicol {
border: 0 solid black;
background-color: green;
width: 100px;
height: 100px;
}
.horizontal_tb { border-bottom-width: 50px; }
.vertical_rl { border-left-width: 50px; }
.vertical_lr { border-right-width: 50px; }
</style>
<p>
There should be four green squares below, plus a large black border on one side, as
indicated. There should be no red.
</p>
<div class="test pos1">
<p>Border below</p>
<div class="multicol horizontal_tb"></div>
</div>
<div class="test pos2">
<p>Border left</p>
<div class="multicol vertical_rl"></div>
</div>
<div class="test pos3">
<p>Border right</p>
<div class="multicol vertical_lr"></div>
</div>