At the bottom of this page, there are two columns. The right-hand column contains a twitter feed and the left-hand column shows a YouTube video and a comments section. The columns are created by the following HTML & CSS
.leftCol {
margin-right: 365px;
}
.rightCol {
float: right;
margin-bottom: 10px;
width: 355px;
}
<div class="rightCol">
<div>
<div class="leftCol">
<div>
But for reasons I don't understand, the left-hand column doesn't slide up into the vacant space to the left of the the right-hand column.