something blue,
world {
  color: blue;
}
.div (3434) {
  height: 100px;
}
.div cool red {
  height: 4000px;
}
.span5 {
  color: 15;
}
.span4 {
  color: 14;
}
.span3 {
  color: 13;
}
.span2 {
  color: 12;
}
.span1 {
  color: 11;
}