Simple fix for when the posititioning of all elements is messed up @ xkcd.com

simple-xkcd.css

@-moz-document domain("xkcd.com") {
  @namespace url(http://www.w3.org/1999/xhtml);
  body {
    background: #fff!important;
    width: inherit;
    position: inherit;
  }

  .box {
    background: #fff;
    border-width: 0px;
  }

  #topContainer, #middleContainer, #bottom {
    width: inherit;
  }

  #middleContainer {
    position: inherit;
    left: inherit;
    margin-left: inherit;
  }

  #bottom {
    margin-top: 5px;
    padding: 30px 0px;
  }
}