.banner {
  width: 100%;
  height: 700px;
  position: relative;
  background: linear-gradient(#000000,#2a419b);
}
.banner .bg {
  background-image: ;
  background-repeat: no-repeat;
  width: 100%;
  height: 700px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.top-p-img {
  width: 850px;
  height: 119px;
  background-image: ;
  background-repeat: no-repeat;
  background-size: 850px 119px;
  margin: 70px auto 0;
}
.banner .bg h1 {
  font-size: 28px;
  color: #fff;
  text-align: center;
  margin-top: 30px;
  letter-spacing: 2px;
}