body {
  background: transparent;
}
.back_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.game_content {
  position: relative;
  height: 100%;
}
.game_content ul {
  position: relative;
  height: 63%;
}
.game_content ul li {
  position: absolute;
  bottom: 0;
  left: 23%;
  width: 55%;
  cursor: pointer;
}
.game_content ul li img {
  width: 2.8125vw;
}
.game_content ul li:nth-child(1) {
  bottom: 21%;
}
.btn_box {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.gameBox_btn {
  width: 19.1vw;
  height: 6.875vw;
  margin-top: 6%;
}