html,
body {
  height: auto;
  position: relative;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "微软雅黑";
}
a {
  text-decoration: none !important;
  -webkit-tap-highlight-color: transparent;
  color: inherit;
}
ul,
li {
  list-style: none;
}
.comm_cont {
  width: 100%;
  height: auto;
  min-height: 100vh;
  background-color: #FFFFFF;
}
#head_box {
  width: 100%;
  height: auto;
  position: fixed;
  top: 0px;
  left: 0px;
  z-index: 3;
  background-color: #FFFFFF;
  transition: 0.5s;
}
.head_boxA {
  /*box-shadow: 0px 6px 6px rgba(0, 0, 0, 0.2);*/
  /*transition: 0.5s;*/
  top: -100px !important;
}
.pop_mark {
  position: fixed;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.2);
  top: 0px;
  left: 0px;
  z-index: 3;
  display: flex;
  justify-content: center;
  align-items: center;
  display: none;
}
.pop_mark .pop_box {
  width: 1000px;
  height: auto;
  padding: 50px;
  background-color: #FFFFFF;
}
.pop_mark .pop_box .pop_div {
  width: 90%;
  height: auto;
  margin: auto;
}
.pop_mark .pop_box .pop_div video {
  width: 100%;
}
.pop_mark .pop_box .pop_btn {
  width: 150px;
  height: 50px;
  background-color: #197465;
  margin: 30px auto 0px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  color: #FFFFFF;
}
@media only screen and (max-width: 1250px) {
  .pop_mark .pop_box {
    width: 70%;
    padding: 30px;
  }
  .pop_mark .pop_box .pop_div {
    width: 100%;
  }
  .pop_mark .pop_box .pop_btn {
    width: 115px;
    height: 35px;
    font-size: 15px;
    margin-top: 20px;
  }
}
@media only screen and (max-width: 767px) {
  .pop_mark .pop_box {
    width: 90%;
    padding: 0.2632rem;
  }
  .pop_mark .pop_box .pop_div {
    width: 100%;
    margin-top: 0.2632rem;
  }
  .pop_mark .pop_box .pop_btn {
    width: 2.6316rem;
    height: 0.7895rem;
    font-size: 0.3158rem;
    margin-top: 0.2632rem;
  }
}