#head {
  text-align: center;
  border-bottom: 3px double gray;
  background-color: #FFFFFF;
  font-family: "Arial";
}

#menu {
  float: left;
  width: 18%;
  min-height: 30em;
  background-color: #FFFFFF;
  font-family: "Arial";
}

#menu ul {
  margin-left: -2.5em;
}

li ul {
  display: none;
}

li:hover > ul {
  display: block;
}

#menu li {
  list-style-type: none;
  width: 9em;
  text-align: center;
  margin-left: 3em;
}

#menu a {
  text-decoratioN: none;
  color: black;
  display: block;  
  border: 3px white outset;
  background-color: #B7DCFF;
}

#menu a:hover {
  border: 3px white inset;
}

#center {
  float: left;
  width: 60%;
  padding-left: 1%;
  padding-right: 2%;
  min-height: 30em;
  background-color: #FFFFFF;
  font-family: "Arial";
}

#right {
  float: left;
  width: 17%;
  padding-left: 1%;
  min-height: 30em;
  background-color: #FFFFFF;
  font-family: "Arial";
}

#footer {
  border-top: 3px double gray;
  float: left;
  width: 100%;
  clear: both;
  text-align: center;
  background-color:#FFFFFF;
}