h1 {color:blue}
div {
  height: 70px;font-size:60px;text-align: center; border-radius:20%
}
#red-box {
  background: red;color: violet;
}
#orange-box {
  background: orange;color:red
}
#yellow-box {
  background: yellow;color:orange
}
#green-box {
  background: green;color:yellow
}
#blue-box {
  background: blue;color:green
}
#indigo-box {
  background: indigo;color:blue
}
#violet-box {
  background: violet;color:indigo
}