.about_park{
    background: #fff;
    padding:0;
    margin:0;
}

.p_i_content{
    margin: 0 4.8vw;
}

.p_t_content{
    margin:3vw 0;
}

.m_son_nav{
    margin: 0;
}

.font_sy_bold{
    font-weight: normal;
}

.font_sy_normal{
    font-weight: normal;
}

.top_banner > div:nth-child(1) {
    height: 66.7vw;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}

/*大屏样式*/
@media (min-width: 992px) {
    .top_banner > div:nth-child(1) {
        height: 43vw;
    }
}