.nav {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
}
.nav .mobNav {
  display: none;
}
.nav .dropdown {
  width: 1200px;
}
.nav .menu {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start;
}
.nav .menu li {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
}
.nav .menu li:last-child a {
  border-right: none;
}
.nav .menu a {
  color: #fff;
  /*border-right: 1px solid #05558b;*/
  height: 50px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  font-size: 18px;
  text-decoration: none;
}
.nav .menu a:hover {
  background: #b32f27;
  color:#fff;
  -webkit-transition: all 300ms linear;
  transition: all 300ms linear;
}
@media screen and (max-width: 800px) {
  .nav {
    background: #bc413a;
    position: relative;
    padding: 4vw;
  }
  .nav .mobNav {
    display: block;
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
  }
  .nav .mobNav .toolBar {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    height: 10vw;
    overflow: hidden;
  }
  .nav .mobNav .menuBtn {
    padding: 0;
    margin: 0;
    height: 9vw;
    width: 8vw;
    background:#bc413a url(https://www.sjzc.edu.cn/tyxy/atm/1631946696704/20210918152018410.png) center center no-repeat;
    background-size: 9vw 9vw;
    border: none;
    outline: none;
    border-radius: 1px;
  }
  .nav .mobNav .menuBtn:active {
    opacity: 0.8;
  }
  .nav .mobNav .menuBtn.close {
    background: #bc413a url(https://www.sjzc.edu.cn/tyxy/atm/1631946696704/20210918152018419.png) center center no-repeat;
    background-size: 5vw 5vw;
  }
  .nav .menu a {
  color: #fff;
  font-size:15px;
  height:45px;
  }
  .nav .mobNav a {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    align-items: center;
  }
  .nav .mobNav a img {
	 padding-left:4%;
    height: auto;
    width: 100%;
  }
  .nav .mobNav span {
    width: 8vw;
    height: 8vw;
  }
  .nav .dropdown {
    position: absolute;
    left: 0;
    top: 18vw;
    width: 100vw;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    display: none;
  }
  .nav .dropdown .menu {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
  }
  .nav .dropdown .menu li {
    width: 100vw;
  }
  .nav .dropdown .menu li:last-child a {
    border-bottom: 0;
  }
  .nav .dropdown .menu a {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    border-right: none;
    text-indent: 2vw;
    border-bottom: 1px solid #919191;
  }
  .nav .dropdown.show {
    display: block;
  }
}