.header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 160px;
  z-index: 10;
}

.w1440 {
  width: 1440px;
  margin: 0 auto;
}

.w1220 {
  width: 1220px;
  margin: 0 auto;
}

#div_main{
  margin-top:140px;

}
.header .content {
  position: relative;
}

.flex {
  display: flex;
  align-items: center;
}

.flex-sb {
  justify-content: space-between;
}

.header .logo {
  height: 80px;
  background: #fff;
}

.header .nav {
  height: 60px;

  background: #52b788;
}

.other {
  position: relative;
  flex: 1;
  justify-content: flex-end;
}

.other .line {
  height: 30px;
  width: 1px;
  background: #52b788;
  margin: 0 20px;
}

.wx-code {
  position: absolute;
  top: 28px;
  right: 246px;
  display: none;
}

.cx-code {
  position: absolute;
  top: 28px;
  right: 62px;
  display: none;
}

.wx:hover .wx-code {
  display: block;
}

/*  */
.nav-box{
  /*display: flex;*/
}
.nav-box .item{
  width: 130px;
  height: 60px;
  text-align: center;
  line-height: 60px;
  font-size: 20px;
  background: #52b788;
  color: #fff;
  cursor:pointer;
  float: left;
}
.nav-box .active{
  color: #52b788 !important;
  background: #fff;
}
/* footer */
.footer{
  position: relative;
  width: 100%;
  height: 650px;
  background-image: url(../image/bottom-bg.png) ;
  background-size: 100% 100%;
  background-repeat: no-repeat;
}
.footer .box{
  margin-top: 80px;
  color: #fff;
  width: 255px;
  text-align: left;
  height: 460px;
}
.footer .box .title{
  font-size: 30px;
  line-height: 55px;
  margin-bottom: 10px;
}
.footer .box li{
  color: #fff;
  font-size: 23px;
  line-height: 45px;
}

.footer .box li a {
    color: #fff;
    font-size: 23px;
}