/* when fallback margin offset is used, we animate the change */
.css3transition{
  -moz-transition: margin .2s;
  -webkit-transition: margin .2s;
  -ms-transition: margin .2s;
  -o-transition: margin .2s;
  transition: margin .2s;
}

.clearfix { display: inline-block; }
/* start commented backslash hack \*/
* html .clearfix { height: 1%; }
.clearfix { display: block; }