.ellipse-radial-mask{-webkit-mask-image:radial-gradient(closest-side,black,transparent);mask-image:radial-gradient(closest-side,black,transparent)}.flip-card-back,.flip-card-front{box-shadow:inset 2px 2px 1px 0 rgba(255,255,255,.5),1px 1px 4px 0 rgba(0,0,0,.25),1px 1px 0 0 rgba(177,177,177,1)}