#docs_content {
  position:relative;
  margin-top:80px;
  margin-left:auto;
  margin-right:auto;
  width:650px;
  z-index:2;
  text-align:left;
  font-family:Verdana,Arial,Helvetica,Geneva;
  font-size:10px;
  color:#666666;
}

#uml_diagrams {
  border:0;
  position:relative;
  margin-left:auto;
  margin-right:auto;
  width:650px;
  font-family:Verdana,Arial,Helvetica,Geneva;
  font-size:10px;
  color:#666666;
}
#uml_diagrams td {
  width:30%;
  text-align:center;
}
#uml_diagrams td img {
  border:2px  solid #3399CC;
  padding:10px;
}