body { margin: 0; font-size: 1em; line-height: 1.4; }

html, #main {
  height: 100%;
}

body {
  font-family: Arial, "Liberation Sans", sans-serif;
  min-height: 100%;
  overflow-y: scroll;
}

body, .scales {
  background-position: center center;
  background-repeat: no-repeat;
}