.banner {
  width: 100%;
  height: 350px;
  background-image: url("../image/201807021836005b3a0010243a8.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  min-width: 1200px; }

.product {
  width: 1200px;
  margin: 0 auto;
  margin-top: 40px;
  margin-bottom: 50px; }
  .product ul {
    width: 100%;
    height: 56px;
    border-top: 1px solid #ebebeb;
    border-bottom: 1px solid #ebebeb;
    line-height: 56px; }
    .product ul li {
      text-align: center;
      display: inline-block;
      padding: 0 22px;
      line-height: 56px; }
      .product ul li a {
        color: #444;
        display: inline-block;
        padding: 0 18px;
        height: 28px;
        vertical-align: middle;
        line-height: 28px; }
      .product ul li a.active {
        background-color: #1ba2e6;
        color: #fff; }
    .product ul li:nth-of-type(1) {
      width: 108px;
      height: 100%;
      background-color: #f5f5f5;
      border-left: 1px solid #ebebeb;
      border-right: 1px solid #ebebeb;
      color: #666; }
  .product .img_box {
    width: 100%;
    margin-top: 50px; }