.card-back,.card-front{position:absolute;width:100%;backface-visibility:hidden}body,html{margin:0;padding:0}img{position:absolute;width:100%;height:auto;top:0;left:0}.gr{filter:hue-rotate(120deg) saturate(100%) brightness(300%)}.cy{filter:hue-rotate(175deg) saturate(100%) brightness(300%)}.bl{filter:hue-rotate(218deg) saturate(100%) brightness(150%)}.pu{filter:hue-rotate(290deg) saturate(200%) brightness(200%)}.re{filter:hue-rotate(342deg) saturate(100%) brightness(100%)}.or{filter:hue-rotate(52deg) saturate(200%) brightness(250%)}.ye{filter:hue-rotate(65deg) saturate(100%) brightness(400%)}.wh{filter:hue-rotate(0deg) saturate(0%) brightness(1000%)}@keyframes rotate360{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}.rotating{animation:60s linear infinite rotate360}.card{width:100%;transform-style:preserve-3d;transition:transform 1.2s}.card-back,.flipped{transform:rotateY(180deg)}.card-front{padding-top:100%;top:50%;overflow:hidden}.card-back{color:orange;font-size:4vw;font-family:Arial,Helvetica,sans-serif;white-space:pre}