html,
body {
  width: 100%;
  height: 100%;
  min-width: 1200px;
  padding: 0;
  margin: 0;
  background-color: #fff;
}
div {
  box-sizing: border-box;
}
.back-behind {
  width: 100%;
  height: 100%;
}
.page-back {
  width: 100%;
  height: 474px;
  background: #fff url('../images/bg.png') no-repeat center top/cover;
}
.page-content {
  width: 1200px;
  height: 100%;
  margin: -474px auto 0;
}
.logo {
  display: block;
  width: 213px;
  height: 54px;
  margin-bottom: 57px;
  background: url('../images/logo.png') no-repeat center/100%;
}
.header-content {
  width: 100%;
  height: 344px;
  padding-top: 28px;
}
.page-title {
  width: 100%;
  height: 107px;
  background: url('../images/icon_benefit.png') no-repeat center/contain;
}
.footer-content {
  width: 100%;
  height: 160px;
  text-align: center;
  font-size: 16px;
  color: #999;
  line-height: 160px;
}