body {
   margin: 0px;
   background-color: #CCC;
}

#content_wrapper {
  margin: auto;
  width: 1000px;
}
#header, #footer {
  min-height: 150px;
  padding: 5px;
  background-color: #EEE;
  border: 1px solid #999;
}
#content {
  min-height: 300px;
  width: 988px;
  padding: 5px;
  background-color: #FFF;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
}