.flip-word-card{background-color:transparent;height:100%;perspective:1000px;width:100%}.flip-word-card-inner{height:100%;position:relative;text-align:center;transform-style:preserve-3d;transition:transform .6s;width:100%}.flip-click-effect{transform:rotateY(180deg)}.flip-card-back,.flip-card-front{backface-visibility:hidden;background-color:#fff;border:1px solid #aaa;height:100%;position:absolute;width:100%}.flip-card-front{background-color:#fefefe;color:#000}.flip-card-back{background-color:#fff;color:#aaa;transform:rotateY(180deg)}