.PC #cm748 .promo_case{
    width:908px;
    height: auto;
    margin: 0 auto;
    margin-top:25px;
    }.MOBILE #cm748 .promo_case{
        width:100%;
        height: auto;
        margin-top:0px;
        margin-bottom:10px;
    }

#cm748 .promo_case a.promo_btarea{
    display: block;
    width:100%;
    height: auto;
    transition: all .3s ease-in-out;
}

.PC #cm748 .promo_case a.promo_btarea:hover{
    transform: scale(0.98);
    filter: brightness(1.1);
}

#cm748 .promo_case img{
    display: block;
    width:100%;
    height: auto;
}