header {
  height: 74px;
  background-color: #000;
}


.navbar-brand span {
  ont-family: PingFangSC-Regular;
  font-size: 13px;
  color: #FFFFFF;
  letter-spacing: 1px;
}

.navbar-default .navbar-brand {
  color: #fff;
  text-align: center;
  height: 74px;
  font-family: PangMenZhengDao;
  font-size: 30px;
  color: #FFFFFF;
  letter-spacing: 1.24px;
}

.navbar-default .navbar-brand:hover {
  color: #fff;
}

nav.navbar.navbar-default {
  background: #000;
  margin: 0;
}

.navbar {
  border: 0;
}


ul#top-menu {
  height: 74px;
}

ul#top-menu>li {
  height: 100%;
  margin: 0 20px;
}

ul#top-menu>li>a {
  display: inline-block;
  height: 100%;
  line-height: 74px;
  padding: 0;
  background-color: transparent;
  color: #fff;
  position: relative;
  text-decoration:none;
}

    ul#top-menu > .active > a::after {
        background: #fff;
    }

ul#top-menu>li>a::after{
  content: "";
  height: 2px;
  width: 100%;
  position: absolute;
  right: 0;
  bottom: 0;
  background: transparent;
}

ul#top-menu>li>a:hover::after{
  background: #fff;
}

@media (min-width: 768px) {
  .navbar {
    border-radius: 0px;
  }

}

@media (max-width: 768px){
  .navbar-nav{
    margin: 0;
    width: 100%;
  }
  header {
    height: 60px;
    background-color: #000;
  }

  .navbar-default .navbar-brand {
    color: #fff;
    text-align: center;
    height: 60px;
    font-family: PangMenZhengDao;
    font-size: 20px;
    color: #FFFFFF;
  }
  .navbar-collapse{
    padding: 0;
  }

  ul#top-menu{
    height: auto;
    text-align: center;
    position: relative;
    z-index: 1999;
    background: #000;
    width: 100%;
  }
}