.clearfix:after {
  /*伪元素是行内元素 正常浏览器清除浮动方法*/
  content: "";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.clearfix {
  *zoom: 1;
  /*ie6清除浮动的方式 *号只有IE6-IE7执行，其他浏览器不执行*/
}
.w {
  width: 1200px;
  margin: 0 auto;
}
.advertising {
  text-align: center;
}
.advertising span {
  line-height: 240px;
  font-size: 30px;
  color: #fff;
  font-family: MicrosoftYaHei;
}
.advertising span:first-child {
  font-weight: 600;
  margin-left: 60px;
  margin-right: 16px;
}
header {
  width: 100%;
  height: 80px;
  position: relative;
}
header .logo {
  height: 80px;
  font-size: 16px;
  cursor: pointer;
}
header .logo img {
  width: 144px;
  margin-top: 20px;
  height:40px;
}
header .logo span {
  margin: 0px 0 0 6px;
  line-height: 80px;
  font-weight: 600;
  font-family: SourceHanSansCN;
  color: #158ACC;
  font-size: 20px;
}
header .nav-header {
  height: 80px;
  line-height: 80px;
}
header .nav-header .nav-active div {
  color: #158ACC;
}
header .nav-header .nav-active .line-header {
  visibility: visible;
}
header .nav-header li {
  margin-right: 60px;
  position: relative;
}
header .nav-header li:last-child {
  margin-right: 0px;
}
header .nav-header li div {
  color: #333;
  font-size: 16px;
}
header .nav-header li .line-header {
  position: absolute;
  top: 74px;
  left: calc(50% - 20px);
  margin-right: 20px;
  width: 40px;
  height: 4px;
  background-color: #158ACC;
  margin: 0 auto;
  visibility: hidden;
}
header .nav-header li:hover div {
  color: #158ACC;
}
header .nav-header li:hover .line-header {
  visibility: visible;
}
header .product-hidden {
  position: absolute;
  width: 100%;
  display: none;
}
header .product-show {
  position: absolute;
  z-index: 100;
  width: 100%;
  padding-top: 40px;
  padding-bottom: 40px;
  box-shadow: 0px 4px 8px 0px rgba(0, 0, 0, 0.16), inset 0px 1px 0px 0px #d5d5d5;
  background-color: rgba(0, 0, 0, 0.9);
  display: block;
}
header .product-show .w-box {
  margin-left: 40px;
}
header .product-show .w-box .product-class-1 {
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 16px;
  font-size: 16px;
  font-family: MicrosoftYaHei;
  color: #f8f8f8;
  font-weight: 600;
  border-bottom: 2px solid #BFBFBF;
}
header .product-show .w-box .product-class-2 {
  width: 142px;
  margin-right: 50px;
  margin-bottom: 11px;
}
header .product-show .w-box .product-class-2:last-child {
  margin-right: 0;
}
header .product-show .w-box .product-class-2 .product-class-3 {
  font-family: MicrosoftYaHei;
  font-size: 14px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
}
header .product-show .w-box .product-class-2 .product-class-4 {
  position: relative;
  font-size: 14px;
  display: inline-block;
  margin-bottom: 16px;
}
header .product-show .w-box .product-class-2 .product-class-4 .product-name {
  color: #ccc;
  width: 142px;
}
header .product-show .w-box .product-class-2 .product-class-4 .product-name:hover {
  color: #158ACC;
}
header .product-show .w-box .product-class-2 .product-class-4 .product-img {
  position: absolute;
  z-index: 99;
  top: -136px;
  left: 142px;
  width: 285px;
  height: 285px;
  background-color: #fff;
  display: none;
  border: 1px solid #158ACC;
}
header .product-show .w-box .product-class-2 .product-class-4 .product-img .img {
  width: 285px;
  height: 285px;
}
header .product-show .w-box .product-class-2 .product-class-4 .product-img-show {
  display: block;
  border: 1px solid #158ACC;
}
footer {
  width: 100%;
  background-color: #D5D5D5;
  margin-top: 60px;
}
footer .footer-top {
  padding: 60px 0px;
}
footer .footer-top .footer-left dl dt {
  font-weight: 600;
  font-size: 16px;
  color: #333;
  margin-bottom: 27px;
}
footer .footer-top .footer-left dl dd {
  color: #333;
  line-height: 28px;
}
footer .footer-top .footer-right dl dt {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}
footer .footer-top .footer-right dl dd {
  font-size: 12px;
  line-height: 24px;
  color: #333;
}
footer .footer-top .footer-right dl .hotline {
  font-size: 32px;
  font-family: Arial-Black;
  margin-bottom: 6px;
  color: #333;
}
footer .footer-top .WX-box {
  margin-right: 32px;
}
footer .footer-top .WX-img {
  width: 130px;
  height: 130px;
}
footer .footer-top .WX-text {
  color: #333;
  text-align: center;
  margin: auto;
  margin-top: 4px;
}
footer .footer-bottom {
  height: 64px;
  line-height: 64px;
  text-align: center;
  color: #999;
  font-size: 12px;
  background-color: #333;
}
footer .footer-bottom a {
  color: #999;
}
footer .footer-bottom a:active {
  color: #999;
}