#outer{ 
  width: 70vmin;
  margin: 0 auto;
  height: 70vmin;
  background-color: cadetblue;
  padding: 14vmin 10vmin 18vmin 12vmin;

}


#secondring{

  background-color:darkgrey;
  padding: 13vmin 9vmin 17vmin 9vmin;
  height: 50vmin;
}


#innersquare{
  height: 15vmin;
  background-color:lightyellow;
  padding:20vmin;


}

h2 {
  color: seagreen
  
  
}