.w100 {
  width: 100%;
}
.center {
  width: 1400px;
  margin: 0 auto;
}
.product_banner {
  background-image: url('../images/product/yxf_banner.png') no-repeat;
}
.nav {
  height: 64px;
}
.nav a {
  color: #666;
  font-size: 16px;
  display: inline-block;
  line-height: 64px;
}
.wrapper {
  background: #fff;
}
.wrapper .center {
  padding-top: 90px;
}
.wrapper .center h1 {
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 63px;
}
.wrapper .center .card {
  width: 1323px;
  margin: 0 auto;
  box-shadow: 0 3px 12px 2px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-around;
  margin-bottom: 52px;
}
.wrapper .center .card .left,
.wrapper .center .card .right {
  width: 50%;
}
.wrapper .center .card .text {
  width: 100%;
  height: 100%;
  padding: 63px 68px;
  padding-bottom: 34px;
}
.wrapper .center .card h2 {
  font-size: 28px;
  color: #EB5635;
  margin-bottom: 40px;
}
.wrapper .center .card p.title {
  font-size: 24px;
  font-weight: 600;
  margin-top: 43px;
}
.wrapper .center .card p.title img {
  width: 25px;
  height: 25px;
}
.wrapper .center .card p.desc {
  font-size: 16px;
  color: #666666;
  line-height: 30px;
  padding-left: 25px;
  margin-top: 10px;
}
.wrapper .center .card .img_box {
  width: 572px;
  height: 400px;
  margin: 34px 45px;
}
.wrapper .center .card .img_box img {
  width: 100%;
  height: 100%;
}