#tan-box {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  z-index: 99;
}
#tan-box .tan {
  width: 600px;
  height: 480px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 8px;
  background: #FFF;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
#tan-box .tan .tan-cha {
  width: 24px;
  height: 24px;
  position: absolute;
  top: 24px;
  right: 24px;
}
#tan-box .tan .tiao-bg {
  width: 240px;
  height: 180px;
  margin-bottom: 16px;
}
#tan-box .tan h3 {
  color: #333;
  text-align: center;
  font-family: m;
  font-size: 20px;
  font-style: normal;
  font-weight: 700;
  line-height: 30px;
  width: 450px;
  margin-bottom: 12px;
}
#tan-box .tan span {
  color: #666;
  text-align: center;
  font-family: m;
  font-size: 16px;
  font-style: normal;
  font-weight: 500;
  margin-bottom: 16px;
}
#tan-box .tan .tiao-href {
  width: 285px;
  height: 55px;
  border-radius: 4px;
  background: #D33C3C;
  color: #FFF;
  text-align: center;
  line-height: 55px;
  font-family: m;
  font-size: 20px;
}
@media (min-width: 560px) and (max-width: 749px) {
  #tan-box .tan {
    width: calc(100% - 20px);
    height: auto;
  }
  #tan-box .tan h3 {
    width: 100%;
  }
}
@media (min-width: 0px) and (max-width: 559px) {
  #tan-box .tan {
    width: calc(100% - 20px);
    height: auto;
  }
  #tan-box .tan h3 {
    width: 100%;
  }
}