html, body{
	overflow-y: scroll;
}

* {
  box-sizing: border-box;
}

#bg-lt {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%; 
  min-height: 100%;
}

#content {
  width: 100%;
  padding: 20px;
  overflow-y: scroll;
}