body {
  margin:3vmin;font-family:Verdana;
}
a{color: #68A9D8}
nav{text-align: center;}
#background{width: 70vmin;
  height: 94vmin;
  background-color:#e5d6c3;
  margin:0 auto;position:relative;}
#square1{position: absolute;
  width: 27vmin;
  height: 28vmin;
  left: 8vmin;
  top: 15vmin;
  background-color: #68ACD9;}
#square2{position: absolute;
  width: 22vmin;
  height: 23vmin;
  background-color:#2E2D2E;
  right:8vmin;
  top: 15vmin;}
#square3{position: absolute;
  width: 22vmin;
  height: 23vmin;
  background-color:#23AD5D;
  left: 8vmin;
  bottom: 23vmin;}
#square4{position: absolute;
  width: 27vmin;
  height: 28vmin;
  background-color:#F0A984;
  right:8vmin;
  bottom: 23vmin}