.nav-fixed{
  position: fixed;
  top: 0;
  width: 100%;
  left: 0;
  background-color: #fff;
  z-index: 100;
  box-shadow:0px 5px 20px 0px rgba(164,164,164,0.2);
  height: 80px;
}
header{
  height:80px;
}
header .head-logo{
  padding: 10px 0;
  height: 100%;
  width: 50%;
  box-sizing: border-box;
  display: block;
}
header .head-logo img{
  width: 60px;
}
header .head-logo .title{
  line-height: 32px;
  margin-left: 20px;
}
header .nav{
  width: 50%;
  padding-top: 22px;
  box-sizing: border-box;
}
header .nav li{
  width: 100px;
  height: 36px;
  text-align: center;
  line-height: 36px;
  border-radius: 18px;
  float: left;
  margin: 0 35px;
}
header .nav li:hover{
  box-shadow: 0px 6px 8px 0px rgba(31,199,194,0.4);
  background:rgba(23,135,255,1);
  box-shadow:0px 6px 8px 0px rgba(23,135,255,0.4);
  border-radius:18px;
}
header .nav li:hover a{
  color: #fff !important;
}
header .nav .active{
  box-shadow: 0px 6px 8px 0px rgba(31,199,194,0.4);
  background:rgba(23,135,255,1);
  box-shadow:0px 6px 8px 0px rgba(23,135,255,0.4);
  border-radius:18px;
}
header .nav .active a{
  color: #fff !important;
}
header .go-top{
  width: 80px;
  height: 80px;
  display: block;
  position: fixed;
  top: 0px;
  right: 0%;
  background-color: #1DBEB9;
  padding-top: 28px;
  box-sizing: border-box;
}
header .go-top p{
  margin: 5px auto 0;
  color:#fff;
  display: none;
}
header .go-top:hover{
  padding-top: 18px;
  transition: all 0.5s;
}
header .go-top:hover p{
  display: block;
  transition: all 0.5s;
}