In order to float left and right my sidebar and posts in Wordpress I need to apply a class to 'page-wrap' that will clear both.

I would like help locating 'page-wrap' to apply the class please

aside { float:right; width:250px; } .post { float:left; width:500px; }

.group:after { visibility: hidden; display: block; font-size: 0; content: " "; clear: both; height: 0; }