.offerAD {
  position: fixed;
  display: flex;
  width: 100%;
  height: 100vh;
  top: 0;
  background-color: rgba(0, 0, 0, 0.7);
  justify-content: center;
  z-index: 99999;
}
.offerAD-cont {
  display: flex;
  position: relative;
  width: 90%;
  max-width: 600px;
  height: 95vw;
  max-height: 600px;
  border-radius: 20px;
  background-color: #ffffff;
  top: 50%;
  justify-content: flex-end;
  flex-direction: column;
  transform: translate(0, -50%);
}
.offerAD-cont .popup_bn {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 100%;
  background: url(../images/popup/popup_bn.jpg) top center / 100% no-repeat;
  border-radius: 20px;
}
.offerAD-cont button {
  position: absolute;
  width: 40px;
  height: 40px;
  top: 15px;
  right: 15px;
  background: #323232 url(../images/popup/close.svg) center center / 100% no-repeat;
  background-size: 18px 18px;
  border-radius: 40px;
  cursor: pointer;
  border: none;
  outline: none;
}

@media screen and (max-width: 680px) {
  .offerAD-cont {
    height: 84vw;
  }
}

@media screen and (max-width: 640px) {
.offerAD-cont button {
    top: -20px;
    right: -8px;
  }
}