/* --------------------------------------------------------------------------- images */

body {
  background-image: url('planets/stars.png'); 
  background-repeat: repeat; }

#universe {
  background-image: url('planets/universe.png'); }

#sun {
  background-image: url('planets/sun.png'); }

#mercury .planet {
  background-image: url('planets/mercury.png'); }

#venus .planet {
  background-image: url('planets/venus.png'); }

#earth .planet {
  background-image: url('planets/earth.png'); }

#earth .moon {
  background-color: #DDD; 
  background-image: url('planets/moon.png'); }

#mars .planet {
  background-image: url('planets/mars.png'); }

#jupiter .planet {
  background-image: url('planets/jupiter.png'); }

#saturn .planet {
  background-image: url('planets/saturn.png'); }

#uranus .planet {
  background-image: url('planets/uranus.png'); }

#neptune .planet {
   background-image: url('planets/neptune.png'); }