BODY {font-family: non-serif; font-size: medium; color: black;
  background-color: #0FFF99; background-image: url(background_image.jpg)}
H1 {font-family: non-serif; font-size: xx-large; color: green}
H2 {font-family: non-serif; font-size: x-large; color: green}
H3 {font-family: non-serif; font-size: large; color: green}
BODY {font-family: non-serif; font-size: large}