.person-mark{background-color:#1d6eae;background-repeat:no-repeat;background-size:cover;position:relative;overflow:hidden}.person-mark span{opacity:0}.person-mark:after{content:"";pointer-events:none;background:linear-gradient(#081e3405,#081e3429);position:absolute;inset:0}.person-card:first-child .person-mark{background-image:url(/WULab/people/wu.jpg);background-position:50% 34%}.person-card:nth-child(2) .person-mark{background-image:url(/WULab/people/yau.jpg);background-position:50% 30%}.person-card:nth-child(3) .person-mark{background-image:url(/WULab/people/gong.jpg);background-position:50% 20%}