.block4 {
    margin-top: 95px;
    box-sizing: border-box;
    flex-direction: column;
    width:100%;
}
    .block4 .bg {
        width: 100%;
        height: 978px;
        background: url('../../images/join/jiameng.png') no-repeat;
        background-size: contain;
        color: #fff;
        text-align: center;
        padding-top: 94px;
    }
.block4 .bg .title-jiameng{
    font-size:32px;
    font-weight:bold;
    margin-bottom: 18px;
}
        .block4 .bg .title-jiameng-en {
            font-size: 18px;
        }