* { box-sizing: border-box; }

#outer{
  width: 80vmin;
  height: 80vmin;
  margin: 0 auto;
  background-color: #893a3a;  
  padding: 15vmin 11vmin 15vmin 11vmin;
}

#secondring{
  
  background-color: #dc1442; 
  padding: 12vmin 7vmin 15vmin 7vmin;
  height: 60vmin;
}


#innersquare {
  height: 40vmin;
  background-color: #1478dc; 
  padding: 10vmin;
}