body, html{
  background: #6e9ac7 url(../img/about/bg.png) no-repeat;
  background-position: center top;
  background-size: 100% auto;
}
.topTitle {
  height: 936px;
}
.job_main {
  width: 1736px;
  margin: 0 auto 40px;
  background: url(../img/about/left_come.png) no-repeat 1251px 125px,
              url(../img/about/come.png) no-repeat 1316px 105px,
              url(../img/about/n_bg.png);
}
.job_title {
  height: 228px;
  background: url(../img/about/look.png) no-repeat;
  background-position: 818px 0;
  padding-left: 85px;
  background-size: 194px 173px;
}
.job_title p {
  line-height: 86px;
  font-size: 38px;
  text-align: center;
  letter-spacing: 5px;
  width: 652px;
  background: url(../img/about/school_title.png) no-repeat;
  background-size: 652px 86px;
}
.list_title {
  display: flex;
  background-color: #004180;
  line-height: 72px;
  margin: 0 568px 0 85px;
}
.title_first {
  width: 345px;
  color: white;
  font-size: 25px;
  text-align: center;
}
.title_second {
  width: 265px;
  color: white;
  font-size: 25px;
}
.title_third {
  width: 280px;
  color: white;
  font-size: 25px;
  text-align: center;
}
.title_fourth {
  width: 200px;
  color: white;
  font-size: 24px;
  text-align: center;
}
.list_blue {
  display: flex;
  line-height: 72px;
  margin: 0 568px 0 85px;
}
.list_white {
  display: flex;
  line-height: 72px;
  margin: 0 568px 0 85px;
  background-color: white;
}
.blue_first {
  width: 345px;
  font-size: 20px;
  text-align: center;
}
.blue_second {
  width: 265px;
  font-size: 20px;
}
.blue_third {
  width: 280px;
  font-size: 20px;
  text-align: center;
}
.blue_fourth {
  width: 200px;
  font-size: 20px;
  text-align: center;
  background: url(../img/about/down.png) no-repeat center center;
}
.list_collapse {
  margin: 0 570px 0 87px;
  /* border: 1px solid #004181; */
  max-height: 0px;
  transition: max-height 600px;
  overflow: hidden;
}
.list_collapse p {
  font-size: 16px;
  padding: 24px 38px 21px 120px;
  line-height: 45px;
  padding-bottom: 10px;
}
.list_collapse button {
  margin-left: 783px;
  font-size: 18px;
  line-height: 34px;
  color: #004181;
  width: 140px;
  padding: 0;
  border: 1px solid #004181;
  border-radius: 4px;
  background-color: transparent;
}

.joinUsImg{
  position: absolute;
  bottom: 96px;
  left: 81px;
}

@media screen and (max-width: 1600px) {
  .job_main{
    width: 1426px;
  }
  .job_title p{
    width: 477px;
    background-size: 477px 86px;
  }
  .job_title{
    background-position: 646px 0;
  }
  .job_main{
    background: url(../img/about/left_come.png) no-repeat 935px 125px, url(../img/about/come.png) no-repeat 1014px 105px, url(../img/about/n_bg.png);
  }
  .joinUsImg{
    width: 750px;
  }
}