html,
body {
  position: relative;
  width: 100%;
  height: auto;
  font-size: 16px;
  font-family: "Microsoft YaHei";
}
/*版心*/
.w1200 {
  width: 1200px;
  margin: 0 auto;
}
/*头部*/
header {
  width: 100%;
  height: 104px;
  background: url(../images/nav_bg.png) no-repeat;
  background-size: 100%;
  border-bottom: 10px solid #ffc8b8;
}
header .nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
header .nav li {
  width: 215px;
  height: 63px;
  background: url(../images/nav.png) no-repeat;
}
header .nav li:hover {
  background: url(../images/nav_on.png) no-repeat;
}
header .nav li:hover a {
  color: #009893;
}
header .nav li:hover a::after {
  position: absolute;
  left: 50%;
  bottom: 0;
  content: "";
  width: 246px;
  height: 93px;
  background: url(../images/nav_on_flower.png) no-repeat;
  transform: translateX(-50%);
}
header .nav li a {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  color: #0079ff;
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 1px;
}
header .nav .nav_active {
  background: url(../images/nav_on.png) no-repeat;
}
header .nav .nav_active a {
  color: #009893;
}
header .nav .nav_active a::after {
  position: absolute;
  left: 50%;
  bottom: 0;
  content: "";
  width: 246px;
  height: 93px;
  background: url(../images/nav_on_flower.png) no-repeat;
  transform: translateX(-50%);
}
/*banner*/
.banner {
  width: 100%;
}
.banner img {
  width: 100%;
  height: 100%;
}
/*内容*/
article {
  position: relative;
}
article .head-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}
article .head-bg img {
  width: 100%;
}
article .content {
  position: relative;
  padding: 80px 0 160px;
  z-index: 1;
}
article .bottom-bg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
}
article .bottom-bg img {
  width: 100%;
}
/*版权*/
footer {
  width: 100%;
  height: 103px;
  color: #fff;
  font-size: 14px;
  line-height: 103px;
  text-align: center;
  background: url(../images/copyright_bg.png) no-repeat;
  background-size: 100%;
}