#member1720 dl {
    background-image:url(/images/staff/1720/2ffe2553ad5c19dca321e37acba61ffc.jpg);
}
@media only screen and (max-width: 830px) {
#member1720 .hello {
    background-image:url(/images/staff/1720/2ffe2553ad5c19dca321e37acba61ffc.jpg);
}
}