#menu_right {
  width: 242px;
  display: inline;
  float: right;
  background-color: #EFEEE9;
  margin-right: 10px;
  border: 1px #D9D6D1 solid;
  color: #837DB2;
  font-size: x-small; 
}
#menu_left {
  width: 172px;
  display: inline;
  float: left;
 background-color: #EFEEE9;
  margin-left: 10px;
  color: #837DB2;
  font-size: x-small; 
  border-left: 1px #D9D6D1 solid;
  border-right: 1px #D9D6D1 solid;
  border-bottom: 1px #D9D6D1 solid;
  padding-left: 7px;
  padding-right: 7px;
}