/* banner */
.banner {
  width: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.banner .w1200 {
  position: relative;
  height: 500px;
  padding: 155px 0 0;
  box-sizing: border-box;
}

.banner img {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 1074px;
  height: 240px;
}

.main {
  width: 100%;
}

.main .item {
  width: 100%;
  padding: 80px 0;
  box-sizing: border-box;
}

.main .item h3 {
  font-size: 36px;
  font-weight: bold;
  color: #111215;
  text-align: center;
  margin-bottom: 50px;
}

.main .item img {
  width: 100%;
}

.main .tip {
  width: 100%;
  padding: 36px 69px 55px 29px;
  box-sizing: border-box;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.main .tip p {
  font-size: 18px;
  font-weight: bold;
  color: #333333;
}