.layui-nav .layui-this:after, .layui-nav-bar {
    content: "";
    position: relative;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
    -webkit-transition: all .2s;
    transition: all .2s;
    pointer-events: none;
}
.header_nav .layui-nav .layui-nav-a{
   position: relative;
}
.header_nav .layui-nav .layui-this .layui-nav-a:after,.header_nav .layui-nav .layui-nav-item:hover .layui-nav-a:after{
  content: "";
  position: absolute;
  top: 24px;
  bottom: 0;
  width: 100%;
  background-color:#1B5CEF;
  height:2px;
  margin-top:6px;
  -webkit-transition: all .2s;
  transition: all .2s;
  pointer-events: none;
  left:0;
}
.header_nav .layui-nav-bar{
content: ""; 
position: absolute; 
left: 0; 
top: 24px; 
width: 0; 
height: 0;
margin-top:6px;  
-webkit-transition: all .2s;
transition: all .2s; 
pointer-events: none;
}

.header_nav .layui-nav .layui-nav-item{
 position: static; 
}
.header_nav .layui-nav .layui-nav-item{
 position: static; 
}
.header_nav .layui-nav{
 position: static;
}
.header_nav .layui-nav-child {
    display: none;
    position: absolute;
    left: 0;
    top: 80px;
    min-width: 100%;
    height:70px;
    line-height: 70px;
    padding:0;
    box-shadow: none;
    border: 0;
    background-color: #fff;
    z-index: 100;
    border-radius: 0;
    border-top: 1px solid #eeeeee;
    white-space: nowrap;
    box-sizing: border-box;
    text-align:center;
}
.header_nav .layui-nav-child li {
  display:inline-block;
  width:120px;
}
.header_nav .layui-nav-child li a{
 color: #5f5f5f !important;
}
.header_nav .layui-nav-child li a:hover{
 color: #1B5CEF !important;
}
 .layui-nav-child ul{
  width:1400px;
  text-align:left;
  margin:0 auto;
}
.nav-child-div{
  width:1400px;
  margin: 0 auto;
}
#nav_hxyw .layui-nav-child ul{
 padding-left:342px;
}
#nav_news .layui-nav-child ul{
 padding-left:756px;
}
.header_nav .layui-nav-child {
  display:block;
	max-height: 0;
	transition: 0.6s;
	overflow: hidden;
  border:0;
}
.header_nav  .layui-show {
	max-height:70px;
	border-top: 1px solid #eeeeee;
	text-align: center;
  line-height:70px;
}