/* 
    style : folding-cube 

    <div class="sk-folding-cube">
        <div class="sk-cube1 sk-cube"></div>
        <div class="sk-cube2 sk-cube"></div>
        <div class="sk-cube4 sk-cube"></div>
        <div class="sk-cube3 sk-cube"></div>
    </div>

*/

.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: #fff;
            -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;
    }
}

/* 
    style : cube-grid 

    <div class="sk-cube-grid">
      <div class="sk-cube sk-cube1"></div>
      <div class="sk-cube sk-cube2"></div>
      <div class="sk-cube sk-cube3"></div>
      <div class="sk-cube sk-cube4"></div>
      <div class="sk-cube sk-cube5"></div>
      <div class="sk-cube sk-cube6"></div>
      <div class="sk-cube sk-cube7"></div>
      <div class="sk-cube sk-cube8"></div>
      <div class="sk-cube sk-cube9"></div>
    </div>

*/

.sk-cube-grid {
    width: 40px;
    height: 40px;
    margin: 100px auto;
}

    .sk-cube-grid .sk-cube {
        width: 33%;
        height: 33%;
        background-color: #fff;
        float: left;
        -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
        animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
    }

    .sk-cube-grid .sk-cube1 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

    .sk-cube-grid .sk-cube2 {
        -webkit-animation-delay: 0.3s;
        animation-delay: 0.3s;
    }

    .sk-cube-grid .sk-cube3 {
        -webkit-animation-delay: 0.4s;
        animation-delay: 0.4s;
    }

    .sk-cube-grid .sk-cube4 {
        -webkit-animation-delay: 0.1s;
        animation-delay: 0.1s;
    }

    .sk-cube-grid .sk-cube5 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

    .sk-cube-grid .sk-cube6 {
        -webkit-animation-delay: 0.3s;
        animation-delay: 0.3s;
    }

    .sk-cube-grid .sk-cube7 {
        -webkit-animation-delay: 0s;
        animation-delay: 0s;
    }

    .sk-cube-grid .sk-cube8 {
        -webkit-animation-delay: 0.1s;
        animation-delay: 0.1s;
    }

    .sk-cube-grid .sk-cube9 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

@-webkit-keyframes sk-cubeGridScaleDelay {
    0%, 70%, 100% {
        -webkit-transform: scale3D(1, 1, 1);
        transform: scale3D(1, 1, 1);
    }

    35% {
        -webkit-transform: scale3D(0, 0, 1);
        transform: scale3D(0, 0, 1);
    }
}

@keyframes sk-cubeGridScaleDelay {
    0%, 70%, 100% {
        -webkit-transform: scale3D(1, 1, 1);
        transform: scale3D(1, 1, 1);
    }

    35% {
        -webkit-transform: scale3D(0, 0, 1);
        transform: scale3D(0, 0, 1);
    }
}

/* 
    style : chase

    <div class="sk-chase">
      <div class="sk-chase-dot"></div>
      <div class="sk-chase-dot"></div>
      <div class="sk-chase-dot"></div>
      <div class="sk-chase-dot"></div>
      <div class="sk-chase-dot"></div>
      <div class="sk-chase-dot"></div>
    </div>

*/

.sk-chase {
    width: 40px;
    height: 40px;
    position: relative;
    animation: sk-chase 2.5s infinite linear both;
}

.sk-chase-dot {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    animation: sk-chase-dot 2.0s infinite ease-in-out both;
}

    .sk-chase-dot:before {
        content: '';
        display: block;
        width: 25%;
        height: 25%;
        background-color: #3f6ad8;
        border-radius: 100%;
        animation: sk-chase-dot-before 2.0s infinite ease-in-out both;
    }

    .sk-chase-dot:nth-child(1) {
        animation-delay: -1.1s;
    }

    .sk-chase-dot:nth-child(2) {
        animation-delay: -1.0s;
    }

    .sk-chase-dot:nth-child(3) {
        animation-delay: -0.9s;
    }

    .sk-chase-dot:nth-child(4) {
        animation-delay: -0.8s;
    }

    .sk-chase-dot:nth-child(5) {
        animation-delay: -0.7s;
    }

    .sk-chase-dot:nth-child(6) {
        animation-delay: -0.6s;
    }

    .sk-chase-dot:nth-child(1):before {
        animation-delay: -1.1s;
    }

    .sk-chase-dot:nth-child(2):before {
        animation-delay: -1.0s;
    }

    .sk-chase-dot:nth-child(3):before {
        animation-delay: -0.9s;
    }

    .sk-chase-dot:nth-child(4):before {
        animation-delay: -0.8s;
    }

    .sk-chase-dot:nth-child(5):before {
        animation-delay: -0.7s;
    }

    .sk-chase-dot:nth-child(6):before {
        animation-delay: -0.6s;
    }

@keyframes sk-chase {
    100% {
        transform: rotate(360deg);
    }
}

@keyframes sk-chase-dot {
    80%, 100% {
        transform: rotate(360deg);
    }
}

@keyframes sk-chase-dot-before {
    50% {
        transform: scale(0.4);
    }

    100%, 0% {
        transform: scale(1.0);
    }
}