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sk-grid{0%,70%,to{transform:scaleZ(1)}35%{transform:scale3D(0,0,1)}}.sk-fold{width:var(--sk-size);height:var(--sk-size);position:relative;transform:rotate(45deg)}.sk-fold-cube{float:left;width:50%;height:50%;position:relative;transform:scale(1.1)}.sk-fold-cube:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-color:var(--sk-color);animation:sk-fold 2.4s infinite linear both;transform-origin:100% 100%}.sk-fold-cube:nth-child(2){transform:scale(1.1) rotate(90deg)}.sk-fold-cube:nth-child(4){transform:scale(1.1) rotate(180deg)}.sk-fold-cube:nth-child(3){transform:scale(1.1) rotate(270deg)}.sk-fold-cube:nth-child(2):before{animation-delay:.3s}.sk-fold-cube:nth-child(4):before{animation-delay:.6s}.sk-fold-cube:nth-child(3):before{animation-delay:.9s}@keyframes sk-fold{0%,10%{transform:perspective(140px) rotateX(-180deg);opacity:0}25%,75%{transform:perspective(140px) rotateX(0);opacity:1}90%,to{transform:perspective(140px) 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