body {
  padding-top: 50px;
}

#boxArea {
  position: relative;
  height: 100%;
  width: 100%;
}

.box {
  position: absolute;
  top: 50%;
  left: 50%;
  background: url("../img/img_simple01_01.jpg") no-repeat center center/contain;
  margin: 0 auto;
}

.box01 {
  width: 200px;
  height: 298px;
  z-index: -1;
}

.box02 {
  width: 150px;
  height: 224px;
  z-index: -2;
}

.box03 {
  width: 100px;
  height: 149px;
  z-index: -3;
}

.box04 {
  width: 50px;
  height: 75px;
  z-index: -4;
}

.box05 {
  width: 25px;
  height: 37px;
  z-index: -5;
}