.ex1 {
  display: flex;
  position: relative;
  align-items: center;
  justify-content: center;
}
.ex1--bg {
  position: relative;
  width: 52rem;
  padding: 4.3rem 0;
  display: block;
}
.ex1--c1 {position:absolute;top: 17.6rem;left: 24.7rem;width:3.8rem;}
.ex1--c2 {position:absolute;top:6rem;left:26rem;width:3.6rem;}
.ex1--c3 {position:absolute;top:8rem;left:15.7rem;width:3.6rem;}
.ex1--c4 {position:absolute;top: 3rem;left: 51.5rem;width:3.6rem;}
.ex1--c5 {position:absolute;top:11rem;left:51rem;width:4.6rem;}