.banner {
    max-width: 1920px;
    min-width: 1200px;
    height: 300px;
    margin: 0 auto;
    background: url(http://www.bhhbmj.com/images/2021jczwgk/red/bane3.jpg) no-repeat center top;
    background-size: cover;
}

.topCon {
    width: 1200px;
    margin: 0 auto;
    padding-top: 75px;
    height: 225px;
    position: relative;
}

.siteLogo {
    position: absolute;
    left: 0;
    top: 10px;
}

.siteLogo .logo {
    width: 50px;
    height: 53px;
    background: url(http://www.km.gov.cn/public_info//images/logo.png?2004101502) no-repeat center;
    margin-right: 15px;
    padding-top: 0;
    position: static;
       background-size: cover;
}

.siteLogo .siteInfo a {
    display: block;
}

.siteLogo .siteInfo h3 {
    font-size: 24px;
    height: 32px;
    line-height: 32px;
    font-weight: 400;
    letter-spacing: 1px;
    color: #fff;
}

.siteLogo .siteInfo p {
    height: 20px;
    font-size: 18px;
    font-weight: 400;
    line-height: 20px;
    letter-spacing: 1px;
    color: #fff;
}

.topTitleB {
    height: 300px;
  display: none;
}

.area {
    width: 106px;
    height: 300px;
    background: url(http://www.bhhbmj.com/images/2020jczwgk/arae.png) no-repeat center top;
    background-size: 100%;
}

.ml_f40 {
    margin-left: -40px !important;
}

.topTitle {
    width: 1040px;
    height: 300px;
    background: url(http://www.bhhbmj.com/images/2020jczwgk/tit.png) no-repeat center;
    background-size: 100%;
}

.buildings {
    position: absolute;
    width: 775px;
    height: 285px;
    right: 0;
    bottom: 0;
    background: url(http://www.bhhbmj.com/images/2020jczwgk/blue.png) no-repeat center;
    background-size: 100%;
  display: none;
}