/* 版心设置 */
.wrapper {
  margin: 0 auto;
  width: 960px;
}

/* 头部区域导航栏 */
.header {
  /* 固定定位新用法 sticky*/
  /* -webkit 兼容浏览器 */
  /* position:-webkit-sticky; */
  /* position:sticky; */
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  height: 48px;
  /* 固定定位的盒子，宽度高度靠内容撑开，希望宽度100%，高度根据内容撑开 */
  /* width: 100%; */
  background: rgba(255, 255, 255, 1);
  z-index: 100;
  transition: all 0.5s;
}

.header .wrapper {
  display: flex;
  height: 48px;
  align-items: center;
  justify-content: space-between;
}

/* logo图片 */
.logo a {
  display: block;
  width: 98px;
  height: 28px;
  background-image: url(../images/logo.png);
  background-size: cover;
  font-size: 0;
}

/* 导航 */
.header .nav ul {
  display: flex;
  /* width: 456px; */
  height: 48px;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
}

.header .nav ul .li-dis .a-dis {
  font-size: 16px;
  color: #222;
}

/* active 类选择器，表示默认选中的a */
.header .nav ul .li-dis .active,
.header .nav ul .li-dis .a-dis:hover {
  color: #165DFF;
  border-bottom: 3px solid #165DFF;
  padding-bottom: 11px;
}


/* 下拉菜单 */
.header .pull-down {
  position: absolute;
  top: 64px;
  left: 35%;
  width: 870px;
  height: 300px;
  background: #FFFFFF;
  border-radius: 5px;
  box-shadow: 0px 10px 25px 0px rgba(141, 141, 141, 0.20);
  transition: all 0.5s;
  height: 0;
  overflow: hidden;

}

.header .nav .li-dis:hover .pull-down {
  height: 290px;
}

.header .nav .li-dis .pull-down h5 {
  margin-top: 34px;
  margin-left: 34px;
  margin-bottom: 20px;
  font-size: 16px;
  color: #737373;
  font-weight: 400;
  line-height: 14px;
}

.header .nav .li-dis .pull-down .line {
  margin-left: 34px;
  margin-bottom: 30px;
  width: 804px;
  height: 1px;
  background: #DCDFE5;
}

.header .nav .li-dis .pull-down .ul-box {
  margin: 30px auto;
  /* margin-left: 34px; */
  width: 800px;
}

.header .nav .li-dis .pull-down .ul-box ol {
  display: flex;
  height: 180px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.header .nav .li-dis .pull-down .ul-box ol .drop a {
  display: flex;
  align-items: center;
  width: 370px;
}

.header .nav .li-dis .pull-down .ul-box ol .drop a img {
  width: 60px;
  vertical-align: middle;
}

.header .nav .li-dis .pull-down .ul-box ol .drop .li-box {
  margin-left: 15px;
}

.header .nav .li-dis .pull-down .ul-box ol .drop .li-box h3 {
  font-weight: 700;
  font-size: 16px;
  color: #000000;
  line-height: 16px;
}

.header .nav .li-dis .pull-down .ul-box ol .drop .li-box p {
  margin-top: 8px;
  font-size: 14px;
  color: #666666;
}

.header .nav .li-dis .pull-down .ul-box ol .drop a:hover .li-box h3,
.header .nav .li-dis .pull-down .ul-box ol .drop a:hover .li-box p {
  color: #165DFF;
}

/* 底部版权 */
.footer {
  height: 470px;
  background: #111111;

}

.footer .footer-nav {
  display: flex;
}

.footer .footer-nav .left img {
  margin-left: 36px;
  margin-top: 93px;
}

.footer .footer-nav .right {
  margin-left: 46px;
  margin-top: 93px;
  display: flex;
  color: #fff;
}

.footer .footer-nav .right dl {
  margin-left: 72px;
  margin-bottom: 75px;

}

.footer .footer-nav .right dt {
  font-weight: bold;
  font-size: 18px;
}

.footer .footer-nav .right dl a,
.footer .footer-nav .right dl dd {
  display: block;
  margin-top: 20px;
  font-size: 16px;
  color: #828B98;
}

.footer .footer-nav .right dl a:hover {
  color: #c8cdd4;
}

.footer .line {
  margin: 0 auto;
  width: 1014px;
  border: 1px solid #393C40;
}

.footer p {
  margin-top: 40px;
  font-size: 16px;
  color: #828B98;
  text-align: center;
  line-height: 16px;
}

/* 媒体查询 */
body {
  background-color: #f5f5f5;
}

/* 内容 */
.article {
  margin: 90px auto;
  padding-bottom: 60px;
  width: 1014px;
  background-color: #fff;
}

.article .nav {
  height: 45px;
  border-bottom: 1px solid #e5e5e5;
  line-height: 45px;
  font-size: 14px;
}

.article .nav a:nth-child(1) {
  margin-left: 30px;
}

.article .nav a:hover {
  color: #007DFF;
}

/* 文章内容 */
.article h1 {
  margin-top: 40px;
  color: #222;
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  line-height: 32px;
}

.article .tit {
  margin: 40px auto;
  font-size: 14px;
  color: #999;
  text-align: center;
}

.article .line {
  border-bottom: 1px solid #e5e5e5;
}

.article .box {
  margin: 30px auto;
  width: 800px;
}

.article .box p {
  margin-top: 10px;
  line-height: 32px;
  text-indent: 2em;
  font-size: 16px;
}

.article .box h3 {
  margin-top: 25px;
  font-size: 18px;
  font-weight: 700;
}

.article .box img {
  display: block;
  margin: 25px auto;
  width: 85%;
}