header.masthead {
    padding-top: 10rem;
    padding-bottom: calc(10rem - 4.5rem);
    /*background: linear-gradient(to bottom, rgba(99, 100, 97, 0.8) 0%, rgba(58, 57, 57, 0.8) 100%), url("/hongchuan/img/house.jpg");*/
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-size: cover;
  }
  header.masthead h1 {
    font-size: 2.25rem;
  }
  @media (min-width: 992px) {
    header.masthead {
      height: 100vh;
      min-height: 40rem;
      padding-top: 4.5rem;
      padding-bottom: 0;
    }
    header.masthead p {
      font-size: 1.15rem;
    }
    header.masthead h1 {
      font-size: 3rem;
    }
  }
  @media (min-width: 1200px) {
    header.masthead h1 {
      font-size: 3.5rem;
    }
  }