.header{ background:url(../images/xmtjz.png) no-repeat top  center; background-size: 100% 100%; height: 475px;}
.header-logo{ margin-top:30px}
.div-title{
    width: 100%;
    height: 74px;
    background: url(../images/section_title_bg.png) no-repeat;
    background-position: 50%;
}
.div-title .div-title-con{
    width: 280px;
    height: 100%;
    margin: auto;
    font-family: Microsoft YaHei;
    font-weight: bold;
    font-size: 27px;
    color: #000;
    line-height: 74px;
    text-align: center;
}


.branch ul li {
    float: left;
    width: 20%;
    text-align: center;
    height: 225px;
    margin-top: 20px;
}

.branch ul li p {
    width: auto;
    margin: 5px auto;
    height: auto;
    font-size: 18px;
}

.branch ul li img {
    width: 146px;
    height: 146px;
}

@media (max-width: 768px) {
    .header-logo{
        margin-top:10px
    }
    .header {
        background: url(../images/xmtjz.png) no-repeat;
        background-size: 100% 100%;
        height: 200px;
    }
    .branch ul li{
        width: 50%;
    }
}