.flip-clock{text-align:center;perspective:400px;margin:20px auto}.flip-clock *,.flip-clock *:before,.flip-clock *:after{box-sizing:border-box}.flip-clock__piece{display:inline-block;margin:0 5px}.flip-clock__slot{font-size:1.3vw;color:white}.card{display:block;position:relative;padding-bottom:.72em;font-size:4rem;line-height:.95;background:0 0}.card__top,.card__bottom,.card__back::before,.card__back::after{display:block;height:.72em;color:#ccc;background:#222;padding:.25em;border-radius:.15em .15em 0 0;backface-visiblity:hidden;transform-style:preserve-3d;width:2em;transform:translateZ(0)}.card__bottom{color:#fff;position:absolute;top:50%;left:0;border-top:solid 1px #000;background:#393939;border-radius:0 0 .15em .15em;pointer-events:none;overflow:hidden}.card__bottom::after{display:block;margin-top:-.72em}.card__back::before,.card__bottom::after{content:attr(data-value)}.card__back{position:absolute;top:0;height:100%;left:0;pointer-events:none}.card__back::before{position:relative;z-index:-1;overflow:hidden}.flip .card__back::before{-webkit-animation:flipTop .3s cubic-bezier(.37,.01,.94,.35);animation:flipTop .3s cubic-bezier(.37,.01,.94,.35);-webkit-animation-fill-mode:both;animation-fill-mode:both;transform-origin:center bottom}.flip .card__back .card__bottom{transform-origin:center top;-webkit-animation-fill-mode:both;animation-fill-mode:both;-webkit-animation:flipBottom .6s cubic-bezier(.15,.45,.28,1);animation:flipBottom .6s cubic-bezier(.15,.45,.28,1)}@media (max-width:768px){.flip-clock{text-align:center}.card{font-size:1.8rem}.card__top,.card__bottom,.card__back::before,.card__back::after{width:2.4em}.flip-clock__slot{font-size:1rem;color:white}}