hr { clear: both; }
h2.highlight { margin-right: 10px; }

div.highlight { clear: both; }

div.highlightimg_left {
  background-color: #ffffcc; float: left; margin-right: 10px; clear: left;
  margin-bottom: 10px;  margin-top: 10px;
}

div.highlightimg_right {
  background-color: #ffffcc; float: right; margin-left: 10px; clear: right;
  margin-bottom: 10px;  margin-top: 10px;
}