.map_wrap {
  position: relative;
}

.map_link .btn_01,
.map_link .btn_02,
.map_link .btn_03,
.map_link .btn_04 {
  position: absolute;
  margin-top: 0;
}

.btn_01 {
  top: 8%;
  left: 20.5%;
}

.btn_02 {
  top: 31%;
  left: 6.5%;
}

.btn_03 {
  top: 39%;
  left: 58.6%;
}

.btn_04 {
  top: 67.5%;
  left: 68.7%;
}