/********************** 메인 ****************************************/
.main_images {
  position: relative;
  padding: 0px;
  background-color: #FBFBFB;
  background-repeat: no-repeat;
  background-position: 100% 100%;
  background-size: contain; /* 로그인 전 메인 이미지 */
  z-index: -1;
}
.main_back {
  margin: auto;
  background-image: url('/el/images/osms/0/main/back.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
  width: 67.708333vw;
  max-width: 900px;
  height: 27.8125vw;
  max-height: 360px;
  position: relative;
}
.main_back>img {
  width: 100%;
  height: 100%;
}
.main_join_btn {
  position: absolute;
  left:50%;
  bottom: 15%;
  margin-left: -75px;
  width: 100%;
  max-width: 150px;
  height: 100%;
  max-height: 50px;
  background-image: url('/el/images/osms/0/main/btn_join.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}
.main_left {
  position: absolute;
  left: 0px;
  top: 50%;
  width: 40px
}
.main_right {
  position: absolute;
  right: 0px;
  top: 50%;
  width: 40px
}
@media screen and (max-width: 800px) {
  .main_join_btn {
    margin-left: -9.375vw;
    max-width: 18.75vw;
    max-height: 5.625vw;
  }
}
@media screen and (max-width: 640px) {
  .main_back {
    background-image: url('/el/images/osms/0/m/main/back.png');
    background-repeat: no-repeat;
    width: 100%;
    height: 62.5vw;
    max-height: 400px;
  }
  .main_left, .main_right {
    width: 6.25vw
  }
  .main_join_btn {
    left:50%;
    bottom: 18%;
    margin-left: -11.71875vw;
    max-width: 23.4375vw;
    max-height: 7.8125vw;
    background-image: url('/el/images/osms/0/m/main/btn_join.png');
  }
}
/* @media screen and (min-width: 1300px) {
  .main_back>img {
    padding: 0px 16%
  }
}
@media screen and (min-width: 1920px) {
  .main_back>img {
    padding: 0px;
    width: 1300px;
    height: 630px
  }
} */