html, body {
  height: 100%;
}
  
body {
  margin: 0 auto 1px auto;
  overflow: -moz-scrollbars-vertical;
}

div#rex-website {
  margin-left: auto;
  margin-right: auto;
  float: none;
}

div#rex-website:after {
  content: "."; 
  display: block; 
  height: 0px;
  clear: both; 
  visibility: hidden;
}