.page-nav{
  width: 100%;
  background: rgba(232, 237, 248, 1);
  height: 64px;
}
.page-nav-fixed{
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
}
.page-nav-ul{
  width: 1192px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
}
.page-nav-li{
  list-style: none;
  width: 238px;
  height: 64px;
  text-align: center;
  line-height: 64px;
  font-size: 20px;
  font-weight: 700; 
}
.page-nav-li a{
  text-decoration: none;
  width: 100%;
  height: 100%;
  display: inline-block;
  color: rgba(24, 24, 24, 1);
  cursor: pointer;
}
.page-nav-li:hover{
  border-bottom: 4px solid #1BD1D1;
}
.page-nav-li:hover a{
  color: #1BD1D1;
}
.page-nav-li-active{
  border-bottom: 4px solid #1BD1D1;
}
.page-nav-li-active a{
  color: #1BD1D1;
}
@media (max-width: 1440px){
  .page-nav-ul{
    width: 1000px;
  }
}
@media (max-width: 1024px){
  .page-nav{
    display: none;
  }
}