.sk-folding-cube{margin:20px auto;width:30px;height:30px;position:relative;transform:rotate(45deg)}.sk-folding-cube .sk-cube{float:left;width:50%;height:50%;position:relative;transform:scale(1.1)}.sk-folding-cube .sk-cube:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-color:black;animation:sk-foldCubeAngle 2.4s linear infinite both;transform-origin:100% 100%}.sk-folding-cube .sk-cube2{transform:scale(1.1) rotate(90deg)}.sk-folding-cube .sk-cube3{transform:scale(1.1) rotate(180deg)}.sk-folding-cube .sk-cube4{transform:scale(1.1) rotate(270deg)}.sk-folding-cube .sk-cube2:before{animation-delay:.3s}.sk-folding-cube .sk-cube3:before{animation-delay:.6s}.sk-folding-cube .sk-cube4:before{animation-delay:.9s}@keyframes sk-foldCubeAngle{0%,10%{transform:perspective(140px) rotateX(-180deg);opacity:0}25%,75%{transform:perspective(140px) rotateX(0deg);opacity:1}90%,to{transform:perspective(140px) rotateY(180deg);opacity:0}}