@charset "utf-8";
html body{font-family:"Microsoft Yahei";}
.ft{font-size:16px}
.ft14{font-size:14px}
.ft20{font-size:20px;font-weight:normal;}
.cover{position:relative;padding-top:75%;}
.cover img{position:absolute;top:0;left:0;object-fit:cover;width:100%;height:100%;}
.time{font-size:14px;color:gray}
.mini{width:120px;height:80px;object-fit:cover;}
.tag{left:4px;bottom:4px;}
.sub{max-height:48px;margin-bottom:0;overflow:hidden;}

@media (max-width: 575.98px) {
    #desc .sm{width:100%}
    .video-box .col{padding:0!important}
    .video-box{position:sticky;top:0;z-index:1020;}
}

@media (min-width: 576px) {
    nav{margin-bottom:1rem !important}
}