body {
  margin: 0px;
  padding: 0px;
}
#header {
  background: #fff;
  width: 100%;
}
#leftcol {
  background: #fff;
  float: left;
  width: 20%;
  height: 500px;
}
#rightcol {
  background: #fff;
  float: right;
  width: 20%;
  height: 500px;
}
#content {
  background: #fff;
  float: left;
  width: 59%;
}
#footer {
  background: #fff;
  clear: both;
  width: 100%;
}