A new micro clearfix hack

/** * For modern browsers * 1. The space content is one way to avoid an Opera bug when the *    contenteditable attribute is included anywhere else in the document. *    Otherwise it causes space to appear at the top and bottom of elements *    that are clearfixed. * 2. The use of `table` rather than `block` is only necessary if using *    `:before` to contain the top-margins of child elements. */.cf:before,.cf:after {    content: " "; /* 1 */    display: table; /* 2 */}.cf:after {    clear: both;}/** * For IE 6/7 only * Include this rule to trigger hasLayout and contain floats. */.cf {    *zoom: 1;}