.img_wrapper {
  display: flex;
  position: relative;
}
.img_wrapper img {
  width: 100%;
  height: 100%;
}
.img_wrapper .btn_use_pos_1 {
  position: absolute;
  bottom: 30%;
  left: 10%;
}
.img_wrapper .btn_use_pos_2 {
  position: absolute;
  bottom: 30%;
  right: 27%;
}
.img_wrapper .btn_use_pos_3 {
  position: absolute;
  left: calc(222/1440*100%);
  bottom: calc(215/750*100%);
}
.img_wrapper .btn_use_pos_4 {
  position: absolute;
  right: calc(393/1440*100%);
  bottom: calc(235/750*100%);
}
.img_wrapper .btn_use_pos_5 {
  position: absolute;
  left: calc(223/1440*100%);
  bottom: calc(234/750*100%);
}
.img_wrapper .btn_use_pos_6 {
  position: absolute;
  right: calc(394/1440*100%);
  bottom: calc(235/750*100%);
}
.img_wrapper .btn_use_pos_7 {
  position: absolute;
  left: calc(171/1440*100%);
  bottom: calc(249/750*100%);
}