.sk-folding-cube {
      margin: 20px auto;
      width: 40px;
      height: 40px;
      position: relative;
      -webkit-transform: rotateZ(45deg);
              transform: rotateZ(45deg);
    }
    
    .sk-folding-cube .sk-cube {
      float: left;
      width: 50%;
      height: 50%;
      position: relative;
      -webkit-transform: scale(1.1);
          -ms-transform: scale(1.1);
              transform: scale(1.1); 
    }
    .sk-folding-cube .sk-cube:before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: #db2777;
      -webkit-animation: sk-foldCubeAngle 2.4s infinite linear both;
              animation: sk-foldCubeAngle 2.4s infinite linear both;
      -webkit-transform-origin: 100% 100%;
          -ms-transform-origin: 100% 100%;
              transform-origin: 100% 100%;
    }
    .sk-folding-cube .sk-cube2 {
      -webkit-transform: scale(1.1) rotateZ(90deg);
              transform: scale(1.1) rotateZ(90deg);
    }
    .sk-folding-cube .sk-cube3 {
      -webkit-transform: scale(1.1) rotateZ(180deg);
              transform: scale(1.1) rotateZ(180deg);
    }
    .sk-folding-cube .sk-cube4 {
      -webkit-transform: scale(1.1) rotateZ(270deg);
              transform: scale(1.1) rotateZ(270deg);
    }
    .sk-folding-cube .sk-cube2:before {
      -webkit-animation-delay: 0.3s;
              animation-delay: 0.3s;
    }
    .sk-folding-cube .sk-cube3:before {
      -webkit-animation-delay: 0.6s;
              animation-delay: 0.6s; 
    }
    .sk-folding-cube .sk-cube4:before {
      -webkit-animation-delay: 0.9s;
              animation-delay: 0.9s;
    }
    @-webkit-keyframes sk-foldCubeAngle {
      0%, 10% {
        -webkit-transform: perspective(140px) rotateX(-180deg);
                transform: perspective(140px) rotateX(-180deg);
        opacity: 0; 
      } 25%, 75% {
        -webkit-transform: perspective(140px) rotateX(0deg);
                transform: perspective(140px) rotateX(0deg);
        opacity: 1; 
      } 90%, 100% {
        -webkit-transform: perspective(140px) rotateY(180deg);
                transform: perspective(140px) rotateY(180deg);
        opacity: 0; 
      } 
    }
    
    @keyframes sk-foldCubeAngle {
      0%, 10% {
        -webkit-transform: perspective(140px) rotateX(-180deg);
                transform: perspective(140px) rotateX(-180deg);
        opacity: 0; 
      } 25%, 75% {
        -webkit-transform: perspective(140px) rotateX(0deg);
                transform: perspective(140px) rotateX(0deg);
        opacity: 1; 
      } 90%, 100% {
        -webkit-transform: perspective(140px) rotateY(180deg);
                transform: perspective(140px) rotateY(180deg);
        opacity: 0; 
      }
    }