body {
  background: transparent;
}
.back_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.sel_box {
  width: 100%;
  height: 100%;
}
.sel_area {
  width: 88%;
  height: 30.5%;
  position: absolute;
  top: 49%;
  left: 50%;
  transform: translateX(-50%);
}
.sel_area>div {
  width: 100%;
  height: 100%;
  position: relative;
}
svg {
  position: absolute;
  top: 0%;
  left: 7vw;
}
.game_btn_group {
  position: absolute;
  top: 82%;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  margin-top: 0;
}