.clearfix:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
.clearfix {
    zoom: 1;     /* triggers hasLayout */
    }  /* Only IE can see inside the conditional comment
    and read this CSS rule. Don't ever use a normal HTML
    comment inside the CC or it will close prematurely. */