.contents {
  background: #000;
}
.fristcn {
  position: relative;
}
.first-image{
  opacity: 0;
}
.header-title {
  position: absolute;
  bottom: 120px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.header-title img {
  width: 20%;
}
.header-title .header-dec {
  font-size: 35px;
  line-height: 66px;
  font-weight: bold;
}
.header-title .header-name {
  font-size: 63px;
  letter-spacing: 20px;
  line-height: 91px;
  font-weight: bold;
}
.header-title .name_c {
  font-size: 22px;
  letter-spacing: 3px;
}
@media only screen and (max-width: 767px) {
  .header-title {
    bottom: 0;
  }
  .header-title img {
    width: 34%;
  }
  .header-title .header-dec {
    font-size: 12px;
    /* letter-spacing: 10px; */
    line-height: 35px;
  }
  .header-title .header-name {
    font-size: 20px;
    letter-spacing: 10px;
    line-height: 30px;
  }
  .header-title .name_c {
    font-size: 12px;
    /* letter-spacing: 5px; */
  }
}
.describe {
  width: 100%;
  height: 200px;
  background: #000;
  color: #fff;
  display: flex;
  align-items: center; /*定义body的元素垂直居中*/
  justify-content: center;
}
.describe p {
  width: 80%;
  text-align: center;
  line-height: 60px;
  font-size: 28px;
}
@media only screen and (max-width: 767px) {
  .describe {
    width: 100%;
    height: 100px;
  }
  .describe p {
    width: 80%;
    line-height: 18px;
    font-size: 10px;
  }
}
.frist_content {
  height: 1155px;
  position: relative;
}
.frist_content .frist_img {
  width: 47%;
  height: 850px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.frist_content .frist_img img {
  width: 72%;
}
.frist_content .frist {
  width: 55%;
  height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  position: absolute;
  left: 571px;
  bottom: 112px;
}
.frist_content .frist .frist_title {
  font-size: 63px;
  line-height: 80px;
  font-weight: bold;
  letter-spacing: 10px;
}
.frist_content .frist .first_desc {
  width: 100%;
}
.frist_content .frist .first_desc p {
  width: 100%;
  font-size: 27px;
  letter-spacing: 0px;
  line-height: 52px;
  font-weight: 400;
}
@media only screen and (max-width: 767px) {
  .frist_content {
    height: 609px;
  }
  .frist_content .frist_img {
    width: 100%;
    height: 267px;
  }
  .frist_content .frist_img img {
    width: 42%;
  }
  .frist_content .frist {
    width: 100%;
    height: 360px;
    left: 10px;
    bottom: 0;
  }
  .frist_content .frist .frist_title {
    font-size: 30px;
    letter-spacing: 2px;
  }
  .frist_content .frist .first_desc p {
    font-size: 14px;
    line-height: 20px;
  }
}
.second_content {
  height: 1260px;
}
.second_content .second_title {
  font-size: 63px;
  height: 160px;
  line-height: 160px;
  font-weight: bold;
}
.second_content .second_desc {
  width: 50%;
  position: relative;
  height: 421px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.second_content .second_desc p {
  width: 96%;
  /* line-height: 66px; */
  font-size: 30px;
  position: absolute;
  bottom: 350px;
  left: 160px;
  /* letter-spacing: 5px; */
}
@media only screen and (max-width: 767px) {
  .second_content {
    height: 490px;
  }
  .second_content .second_title {
    font-size: 30px;
    height: 100px;
    line-height: 100px;
  }
  .second_content .second_desc {
    width: 100%;
    height: 100px;
  }
  .second_content .second_desc p {
    font-size: 14px;
    letter-spacing: 0;
    line-height: 20px;
    left: 0;
    bottom: 0;
    width: 100%;
  }
}
.content_three {
  position: relative;
  width: 100%;
  height: 840px;
}
.content_three img {
  width: 28%;
  position: absolute;
  top: 0;
  left: 82px;
}
.content_three .three_desc {
  width: 70%;
  height: 698px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  right: 0;
  bottom: 76px;
}
.content_three .three_desc p {
  width: 77%;
  font-size: 30px;
  line-height: 55px;
}
@media only screen and (max-width: 767px) {
  .content_three {
    height: 540px;
  }
  .content_three img {
    width: 46%;
  }
  .content_three .three_desc {
    width: 100%;
    height: 332px;
    bottom: 0;
  }
  .content_three .three_desc p {
    width: 100%;
    font-size: 14px;
    letter-spacing: 0;
    line-height: 20px;
  }
}
.content_four {
  height: 1000px;
}
.content_four .four_title {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
  font-size: 63px;
  font-weight: bold;
  letter-spacing: 10px;
}
.content_four .four {
  display: flex;
  align-items: center;
  justify-content:center;
}
.content_four p {
  font-size: 27px;
  height: 500px;
  width: 60%;
  display: flex;
  align-items: center;
  line-height: 45px;
  background-color: rgba(0, 0, 0, 0.5);
}
.content_four img {

  width: 27%;
}
@media only screen and (max-width: 767px) {
  .content_four {
    height: 778px;
  }
  .content_four .four_title {
    font-size: 30px;
    letter-spacing: 3px;
    height: 100px;
    line-height: 100px;
  }
  .content_four .four {
    display: flex;
    flex-direction: column;
  }
  .content_four p {
    font-size: 14px;
    line-height: 20px;
    width: 100%;
    height: 380px;
  }
  .content_four img {
    width: 42%;
  }
}
.content_five {
  height: 1080px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.content_five img {
  width: 29%;
}
.content_five .five_decs {
  width: 69%;
  font-size: 30px;
  /* letter-spacing: 1px; */
  line-height: 61px;
  margin-left: -116px;
  padding-top: 281px;
}
@media only screen and (max-width: 767px) {
  .content_five {
    height: 685px;
    display: flex;
    flex-direction: column;
    border-top: 1px solid rgb(190, 187, 187);
  }
  .content_five img {
    width: 50%;
  }
  .content_five .five_decs {
    width: 100%;
    font-size: 14px;
    line-height: 20px;
    margin-left: 0;
    margin-top: 10px;
    padding-top: 0;
  }
}
.content_sevent {
  height: 2000px;
  margin-top: 200px;
}
.content_sevent .sex_title {
  height: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
}
.content_sevent .sex_title .title_h {
  font-size: 63px;
  font-weight: bold;
  letter-spacing: 8px;
}
.content_sevent .sex_title .title_desc {
  font-size: 45px;
  letter-spacing: 4px;
}
.content_sevent .sex {
  height: 1000px;
  padding-top: 100px;
}
.content_sevent .sex .write_one,
.write_two,
.write_three {
  height: 550px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.content_sevent .sex img {
  width: 77%;
}
.content_sevent .sex p {
  text-align: center;
}
.content_sevent .sex .write_one .one_a,
.one_b,
.one_c,
.one_d,
.two_a,
.two_b,
.two_c,
.two_d,
.three_a,
.three_b,
.three_c,
.three_d {
  height: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}
.sex .write_one .one_a {
  transition-delay: 0.3s;
}
.sex .write_one .one_b {
  transition-delay: 0.8s;
}
.sex .write_one .one_c {
  transition-delay: 1.3s;
}
.sex .write_one .one_d {
  transition-delay: 1.8s;
}
.sex .write_two .two_a {
  transition-delay: 0.3s;
}
.sex .write_two .two_b {
  transition-delay: 0.8s;
}
.sex .write_two .two_c {
  transition-delay: 1.3s;
}
.sex .write_two .two_d {
  transition-delay: 1.8s;
}
.sex .write_three .three_a {
  transition-delay: 0.3s;
}
.sex .write_three .three_b {
  transition-delay: 0.8s;
}
.sex .write_three .three_c {
  transition-delay: 1.3s;
}
.sex .write_three .three_d {
  transition-delay: 1.8s;
}
@media only screen and (max-width: 767px) {
  .content_sevent {
    height: 630px;
    margin-top: 0;
  }

  .content_sevent .sex_title {
    height: 90px;
  }
  .content_sevent .sex_title .title_h {
    font-size: 30px;
    letter-spacing: 0;
  }
  .content_sevent .sex_title .title_desc {
    font-size: 25px;
  }
  .content_sevent .sex {
    height: 500px;
    padding-top: 0;
  }
  .content_sevent .sex p {
    width: 65px;
    height: 33px;
    font-size: 10px;
    overflow: hidden;
    display: -webkit-box;
    display: -moz-inline-box;
    display: -moz-box;
    display: -webkit-inline-box;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    -webkit-line-clamp:2;
  }
  .content_sevent .sex text{
    display: none;
  }
  .content_sevent .sex .write_one,
  .write_two,
  .write_three {
    height: 155px;
    /* overflow:hidden; */
  }
  .content_sevent .sex .write_one .one_a,
  .one_b,
  .one_c,
  .one_d,
  .two_a,
  .two_b,
  .two_c,
  .two_d,
  .three_a,
  .three_b,
  .three_c,
  .three_d {
    height: 150px;
  }
}
.footer {
  background: #000;
  width: 100%;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer img {
  width: 15%;
}
@media only screen and (max-width: 767px) {
  .footer {
    height: 200px;
  }
  .footer img {
    width: 35%;
  }
}