#ad_topslot {
    height: 90px;
    margin-top: 20px;
    margin-bottom: 20px;
}

/* mobile */
@media screen and (max-width: 761px) {
    #ad_topslot {
        height: 100px;
    }

    /* mobile_lr */
    @media screen and (max-height: 550px) {
        #ad_topslot {
            height: 50px;
        }
    }
}