html,
body {
  position: relative;
  width: 100%;
  height: 100%;
  font-family: "Microsoft YaHei";
  background: url(../images/bg.png) no-repeat;
  background-size: 100% 100%;
  overflow: hidden;
}
/*版心*/
.w1200 {
  width: 57.14285714vw;
  margin: 0 auto;
}
img {
  width: 100%;
}
/*头部*/
header {
  width: 100%;
  height: 3.80952381vw;
}
header nav {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-left: 1.14285714vw;
  height: 100%;
}
header nav .nav-lf {
  width: 8.19047619vw;
}
header nav .nav-rg {
  display: flex;
}
header nav .nav-rg li {
  margin-left: 1.28571429vw;
  width: 7.28571429vw;
  height: 2.28571429vw;
  background: url(../images/nav.png) no-repeat;
  background-size: 100% 100%;
}
header nav .nav-rg li:first-of-type {
  margin-left: 0;
}
header nav .nav-rg li:hover {
  background: url(../images/nav_on.png) no-repeat;
  background-size: 100% 100%;
}
header nav .nav-rg li:hover a {
  color: #136a69;
}
header nav .nav-rg li a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  color: #ffffff;
  font-size: 1.04761905vw;
  font-weight: bold;
}
header nav .nav-rg .nav_active {
  color: #136a69;
  background: url(../images/nav_on.png) no-repeat;
  background-size: 100% 100%;
}
header nav .nav-rg .nav_active a {
  color: #136a69;
}
/*banner*/
.banner {
  width: 100%;
}
.banner img {
  width: 100%;
  height: 100%;
}
/*内容*/
article {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: 1%;
  transform: translate(-50%, -50%);
}
article .content {
  padding: 0.95238095vw 4.76190476vw 0;
  height: 40.57142857vw;
  background-color: rgba(75, 154, 182, 0.7);
  border-radius: 0.95238095vw;
}
article .content div {
  position: relative;
  z-index: 1;
}
article .content .icon {
  position: absolute;
  left: -8.57142857vw;
  bottom: -3.0952381vw;
  width: 15.0952381vw;
}
/*版权*/
footer {
  position: absolute;
  left: 0;
  bottom: 1%;
  width: 100%;
  color: #000000;
  font-size: 0.66666667vw;
  text-align: center;
}