#head {
  text-align: center;
  border-bottom: 3px double gray;
}

#left {
  float: left;
  width: 20%;
  min-height: 30em;
  background-color: #EEEEEE;
}

#center {
  float: left;
  width: 60%;
  padding-left: 1%;
  padding-right: 1%;
  min-height: 30em;
}

#right {
  float: left;
  width: 17%;
  padding-left: 1%;
  min-height: 30em;
  background-color: #EEEEEE;
}

#footer {
  border: 1px black solid;
  float: left;
  width: 100%;
  clear: both;
  text-align: center;
}