body {
  background: #f2f2f2;
}
.banner {
  position: relative;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
}
.banner img {
  width: 100%;
  height: auto;
}
.bgIntrduce div {
  line-height: 30px;
}
@media only screen and (max-width: 1024px) {
  .bgIntrduce {
    top: 37%;
  }
  .bgIntrduce div {
    line-height: 25px;
    font-size: 15px;
  }
}