html, body {
  margin: 0;
  padding: 0;
  background-color: #1A1A1A; }

#header {
  position: fixed;
  display: none; }

#main {
  height: 207.26mm;
  width: 455.04741mm;
  margin: 0 auto; }
  #main #page-left {
    float: left;
    background-position: right; }
  #main #page-right {
    float: right;
    background-position: left; }
  #main .page {
    background-color: green;
    width: 227.41mm;
    height: 207.26mm;
    background-repeat: no-repeat;
    background-size: contain; }
    #main .page .inner {
      width: 100%;
      height: 100%;
      border: 1px solid blue; }