*{
  margin: 0;
  padding: 0;
  font-family: Microsoft Yahei,Avenir,Segoe UI,Hiragino Sans GB,STHeiti;
}
*, ::after, ::before {
    box-sizing: border-box;
}
html,body {
  background-color: #F5F5F5;
}
a {
  text-decoration: none;
}
.fs12 {
  font-size: 12px;
}
.tl {
  text-align: left;
}
.tr {
  text-align: right;
}
.tc {
  text-align: center;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.tl {
  text-align: left;
}
.mt20 {
  margin-top: 20px;
}
.mt30 {
  margin-top: 30px;
}
.mt50 {
  margin-top: 50px;
}
.mb10{
  margin-bottom: 10px;
}
.ml20 {
  margin-left: 20px;
}
.ml50 {
  margin-left: 50px;
}
.pl20 {
  padding-left: 20px;
}
.pl30 {
  padding-left: 30px;
}

.tr {
  text-align: right;
}
.clearfix:after{
  content: " ";
  width: 0;
  height: 0;
  clear: both;
  display: block;
}

.warpper {
  width: 100%;
  margin:auto;
  height: inherit;
}

/**** 导航栏 ****/
.header-top {
  height: 32px;
  background-color: #3a3d42;
  line-height: 32px;
  color: #fff;
  text-align: right;
  font-size: 12px;
  padding-right: 15px;
}
.header {
  padding-top: 20px;
  background: #fff;
}
.nav-box {
  height: 80px;
  padding: 8px 16px;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  z-index: 999;
}
.logo-img {
  width: 260px;
}
.nav-ul .nav-li {
  float: left;
}
.nav-ul .nav-li .nav-link {
  display: inline-block;
  padding: 10px 26px;
  height: 68px;
  color: rgba(0,0,0,.6);
  text-align: center;
  font-size: 18px;
}
.nav-sub-title {
  font-size: 13px;
  margin-top: 5px;
}
.nav-ul .nav-li.active{
  background-color: rgb(24,33,70);
}
.nav-ul .nav-li.active .nav-link {
  color: #fff;
}

.footer {
  background-color: #292929;
  color: #bbbbbb;
}
.footer-nav {
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
  padding: 30px 0;
}
.footer-item {
  -ms-flex: 0 0 25%;
  flex: 0 0 25%;
  max-width: 25%;
  padding-right: 15px;
  padding-left: 15px;
}
.footer-item2 {
  flex: 0 0 33.333333%;
  max-width: 33.333333%;
}
.footer-item3 {
  flex: 0 0 12.666667%;
  max-width: 12.666667%;
}
.f-wx-img {
  width: 45%;
}
.f-wx-img p {
  text-align: center;
  font-size: 12px;
  margin-top: 5px;
}

.footer-logo {
  max-width: 100%;
  display: block;
}
.footer-tel-title {
  font-size: 16px;
}
.footer-tel {
  font-size: 30px;
}
.footer-item2, .footer-item3, .footer-item4 {
  padding-top: 12px;
}
.footer-item2 p {
  margin-bottom: 20px;
  font-size: 14px;
}

.footer-nav-title {
  font-size: 16px;
  margin-bottom: 15px;
}
.footer-nav-link {
  margin-bottom: 10px;
}
.footer-nav-link a{
  font-size: 14px;
  color: #bbbbbb;
}
.footer-wx {
  display: block;
  width: 100%;
}
.footer-copyright {
  background-color: #0f0f0f;
  color: #bbbbbb;
  font-size: 12px;
  height: 32px;
  line-height: 32px;
}
.footer-copyright a {
  color: #bbbbbb;
  font-size: 12px;
}

.row {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
}
.col-md-3 {
  flex: 0 0 25%;
  max-width: 25%;
}
.col-md-4 {
  flex: 0 0 33.333333%;
  max-width: 33.333333%;
}
.col-md-6 {
  flex: 0 0 50%;
  max-width: 50%;
}
.col-md-9 {
  -ms-flex: 0 0 75%;
  flex: 0 0 75%;
  max-width: 75%;
}

.navbar-toggler {
  padding: 4px 12px;
  font-size: 20px;
  line-height: 1;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  color: rgba(0,0,0,.5);
  border-color: rgba(0,0,0,.1);
  cursor: pointer;
  float: right;
}

.navbar-toggler .navbar-toggler-icon {
  content: "";
  font-size: 28px;
}

.section-title {
  text-align: center;
  font-size: 36px;
  padding-bottom: 50px;
  position: relative;
}

.section-title:after {
  content: " ";
  display: inline-block;
  height: 4px;
  width: 40px;
  background-color: #182146;
}

.comm-banner {
  height: 400px;
  background-image: url(../images/about/banner.png);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  color: #fff;
  text-align: center;
}
.comm-title {
  padding-top: 100px;
  font-size: 48px;
  text-align: center;
  margin-bottom: 30px;
}
.comm-banner .b {
  font-size: 20px;
}
.comm-banner .b span {
  display: inline-block;
  width: 60px;
  height: 34px;
  line-height: 34px;
  font-size: 22px;
  background-color: #e60012;
  border-radius: 3px;
  margin-right: 10px;
}

.breadcrumbs {
  background-color: #fff;
  padding: 12px 0;
}
.breadcrumbs-content a {
  font-size: 12px;
  color: #333;
}

@media screen and (max-width: 992px) {
  .logo-img {
    width: 220px;
  }
  .nav-ul {
    background-color: #fff;
    margin-top: 20px;
    flex-basis: 100%;
    flex-grow: 1;
    display: none;
    box-shadow: 2px 2px 4px rgba(0,0,0,0.1), -2px -2px 4px rgba(0,0,0,0.1);
  }
  .nav-ul .nav-li {
    float: none;
    width: 100%;
  }
  .nav-ul .nav-li .nav-link {
    text-align: left;
  }

  .section-title {
    font-size: 28px;
    padding-bottom: 30px;
  }

  .section-title:after {
    width: 30px;
  }

  .footer-nav {
    padding: 15px;
    margin: 0;
  }
  .footer-nav .footer-item, .footer-nav .footer-item2 {
    flex: none;
    display: block;
    max-width: 100%;
    width: 100%;
    padding: 0 15px;
  }
  .footer-nav .footer-item3 {display: none;}
  .footer-nav .footer-logo {
    width: 60%;
    margin: auto;
  }
  .footer-item4 {
    text-align: center;
  }
  .footer-wx {
    width: 60%;
    margin: auto;
  }
  .footer-copyright {
    height: auto;
    padding: 0 15px;
    line-height: 22px;
  }
  .comm-banner {
    height: 260px;
  }
  .comm-title {
    font-size: 24px;
    padding-top: 60px;
  }
}


@media screen and (min-width: 992px) {
  .warpper {
    max-width: 1140px;
  }
  .nav-ul {
    display: block;
  }
  .navbar-toggler {
    display: none;
  }
}

@media screen and (min-width: 1200px) {

}