See the code driving the site
body {
display: -webkit-box;
display: -moz-box;
display: box;
-webkit-box-orient: vertical;
-moz-box-orient: vertical;
box-orient: vertical;
-webkit-box-pack: end;
-moz-box-pack: end;
box-pack: end;
}
#examples .example-list {
display: -webkit-box;
display: -moz-box;
display: box;
-webkit-box-align: center;
-moz-box-align: center;
box-align: center;
}
#examples .example-list .example-group {
-webkit-box-flex: 1;
-moz-box-flex: 1;
box-flex: 1;
}
