#main {
  color: #00ff11;
  background-color: #ff00ff;
}
.box {
  color: #00ff11;
  background-color: #808080;
}
#nav {
  background: #ffffff;
  color: #800080;
  background-color: #ffff00;
}
#sidebar {
  background: #ffaa55;
  color: #000000;
  background-color: #808080;
}
#example1 {
  background: #a9a9a9 url(someimage.png) top left;
  color: #40e0d0;
  background-color: #00ff7f;
}