#content {
  overflow:hidden;
}
.demo {
  max-width:100%;
  margin:0;
}
.expand a:link, .expand a:visited {
  background:url(images/arrow-down.gif) no-repeat 98% 50%;
}
.expand a:hover, .expand a:active, .expand a:focus {
  text-decoration:none;
}
.expand.open a:link, .expand.open a:visited {
  background:url(images/arrow-up.gif) no-repeat 98% 50%
}