*{
  margin: 0;
  padding: 0;
  font-family: "Microsoft YaHei";
  box-sizing: border-box;
  outline:none;
}
ul,li{
  list-style:none;
}
.top{
  width: 100%;
  padding:10px 20px;
  background-color: #fff;
  display: flex;
  justify-content:space-between;
  z-index: 9999;
  padding-left: 10px;
}
.logo{
  width: 80%;
  padding-left: 10px;
}
.logo img{
  width: 100%;
}
.nvbox{
  width: 6%;
  position: relative;
}
.menux {
  display: block;
  cursor: pointer;
  height: 40px;
  width: 100%;
  position: absolute;
  z-index: 99999;
  top: calc(50% - 20px);
}
.menux span {
  display: inline-block;
  width: 100%;
  height: 1px;
  background-color: #333;
  border-radius: 5px;
  position: absolute;
  top: 20px;
  left: 0px;
  transition: background-color 0.2s ease-out 0.1s;
}

.menux span:before {
  content: '';
  display: inline-block;
  width: 100%;
  height: 1px;
  background-color: #333;
  border-radius: 5px;
  position: absolute;
  top: -5px;
  left: 0px;
  transition: transform 0.1s ease-out, top 0.3s ease 0.2s;
  transform: rotate(0deg);
}

.menux span:after {
  content: '';
  display: inline-block;
  width: 100%;
  height: 1px;
  background-color: #333;
  border-radius: 5px;
  position: absolute;
  top: 5px;
  left: 0px;
  transition: transform 0.1s ease-out, top 0.3s ease 0.2s;
  transform: rotate(0deg);
}
.header.menu_click {
  background-color: transparent;
}

.header.menu_click:before {
  transition: top 0.3s ease, transform 0.1s ease-out 0.2s;
  transform: rotate(45deg);
  top: 0px;
  background-color: #fff;
}

.header.menu_click:after {
  transition: top 0.3s ease, transform 0.1s ease-out 0.2s;
  transform: rotate(-45deg);
  top: 0px;
  background-color: #fff;
}
#idnvdiv {
	transition: all 1s;
	position: fixed;
	width: 100vw;
	height: 100vh;
	background-color: #000;
	z-index: 0;
	opacity: 0;
	top: -100vh;

}

#idnvdiv.transition {
	display: block;
	opacity: 0.90;
	transition: all 1s;
	z-index: 9999;
	top: 0;
}
.topnvhtit {
	font-size: 5vw;
	color: #fff;
	text-align: center;
	padding-top: 4vw;
}
.child{
  display: none;
  text-indent: 2em;
  border: 0px;
  margin-bottom: -2px;
  margin-top: -15px;
}

.dhcont {
	padding-left: 10vw;

}

.dhcont div {
	width: 80vw;
	border-bottom: 1px #333 solid;
}

.dhcont a img {
	width: 4vw;
	margin-right: 8vw;
}

.dhcont a:link {
	color: #ccc;
	font-size: 14px;
	line-height: 12vw;
	text-decoration: none;
}

.dhcont a:visited {
	color: #ccc;
	font-size: 5vw;
	line-height: 12vw;
	text-decoration: none;
}<!--ºÄʱ1754530823.9601Ãë-->