html,
body {
  position: relative;
  width: 100%;
  height: auto;
  font-size: 16px;
  font-family: "Microsoft YaHei";
  background: url(../images/bg.jpg) center top repeat-y;
  background-size: 100%;
}
/*版心*/
.w1200 {
  width: 1200px;
  margin: 0 auto;
}
/*头部*/
header {
  width: 100%;
  height: 50px;
  background: linear-gradient(#0a0969, #2f1cc2);
}
header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
header nav .nav-rg {
  display: flex;
  height: 100%;
}
header nav .nav-rg li {
  margin-left: 25px;
  height: 100%;
}
header nav .nav-rg li:hover a {
  background-color: #1c1294;
}
header nav .nav-rg li a {
  display: block;
  padding: 0 24px;
  height: 100%;
  color: #ffffff;
  font-size: 16px;
  font-weight: bold;
  line-height: 50px;
  transition: all 0.3s;
}
header nav .nav-rg .nav_active a {
  background-color: #1c1294;
}
/*banner*/
.banner {
  width: 100%;
}
.banner img {
  width: 100%;
  height: 100%;
}
/*内容*/
article .content {
  padding: 0 100px 152px;
}
article .content .title {
  position: relative;
  padding-top: 60px;
  margin-bottom: 60px;
  width: 100%;
  height: 30px;
  text-align: center;
}
article .content .title::after {
  position: absolute;
  left: 50%;
  bottom: -30px;
  content: "";
  width: 136px;
  height: 13px;
  background: url(../images/title_icon.png) no-repeat;
  transform: translateX(-50%);
}
article .content .title h3 {
  position: relative;
  display: inline;
  color: #fff;
  font-size: 26px;
  font-weight: normal;
  z-index: 1;
}
footer {
  width: 100%;
  height: 70px;
  color: #ffffff;
  font-size: 16px;
  line-height: 70px;
  text-align: center;
}