#maincontent {
  margin-left: 160px;
  margin-right: 10px;
  margin-top: 20px;
  padding-left: 5px;
  top: 0px;
  border-left: 1px dashed #acacac;
}

#left_sidebar {
  width: 150px;
  float: left;  
  margin-top: 10px;
  margin-left: 10px;
}