.paper-wrap {
    position: absolute;
    z-index: 100;
}
.fall {
    -webkit-transform-origin: center top ;
    -webkit-animation-name: fall;
    -webkit-animation-duration: 2s;
    -webkit-animation-fill-mode: forwards;
    /*-webkit-animation-timing-function: ease-in;*/
    -webkit-animation-iteration-count: 1;
}
.rotate {
    -webkit-transform-origin: center top ;
    -webkit-animation-name: rotateY;
    -webkit-animation-duration: 0.8s;
    -webkit-animation-delay: 0.2s;
    -webkit-animation-fill-mode: forwards;
    -webkit-animation-timing-function: linear;
    -webkit-animation-iteration-count: 20;
}
.rotate-slow {
    -webkit-transform-origin: center top -10px;
    -webkit-animation-name: rotateY;
    -webkit-animation-duration: 2s;
    -webkit-animation-delay: 0.2s;
    -webkit-animation-fill-mode: forwards;
    -webkit-animation-timing-function: linear;
    -webkit-animation-iteration-count: 20;
}
.sway3d {
    -webkit-animation-name: sway3d;
    -webkit-animation-duration: 2s;
    -webkit-animation-delay: 0.3s;
    -webkit-animation-fill-mode: forwards;
    -webkit-animation-timing-function: ease-in-out;
    -webkit-animation-iteration-count: 1;
}
.sway2d {
    -webkit-animation-name: sway2d;
    -webkit-animation-duration: 2s;
    -webkit-animation-delay: 0.2s;
    -webkit-animation-fill-mode: forwards;
    -webkit-animation-timing-function: ease-in-out;
    -webkit-animation-iteration-count: 5;
}
@-webkit-keyframes sway3d {
    0% {
        /*-webkit-transform: rotateZ(-15deg) rotateX(55deg); */
    }
    30% {
        -webkit-transform: rotateZ(60deg) rotateX(110deg);
        -webkit-animation-timing-function: ease-in-out;
    }
    60% {
        -webkit-transform: rotateZ(-50deg) rotateX(70deg);
        -webkit-animation-timing-function: ease-in-out;
    }
    100% {
        -webkit-transform: rotateZ(60deg) rotateX(110deg);
        -webkit-animation-timing-function: cubic-bezier(0.990, 0.000, 0.890, 0.435);
    }
}
@-webkit-keyframes sway2d {
    0% {
        /*-webkit-transform: rotateZ(-15deg) rotateX(55deg); */
    }
    30% {
        -webkit-transform: translate(10px, 0);
        -webkit-animation-timing-function: ease-in-out;
    }
    60% {
        -webkit-transform: translate(-20px, 0);
        -webkit-animation-timing-function: ease-in-out;
    }
    100% {
        -webkit-transform: translate(30px, 0);
        -webkit-animation-timing-function: cubic-bezier(0.990, 0.000, 0.890, 0.435);
    }
}
@-webkit-keyframes fall {
    0% {
        -webkit-transform: translate(0, 0);
        -webkit-animation-timing-function: ease-out;
    }
    5% {
        -webkit-transform: translate(0, -3px);
        -webkit-animation-timing-function: ease-in;
    }
    60% {
        opacity: 1;
    }
    90% {
        opacity: 0;
    }
    100% {
        -webkit-transform: translate(0, 700px);
        -webkit-animation-timing-function: ease-in;
        opacity: 0;
    }
}
@-webkit-keyframes rotateY {
    0% {
        -webkit-transform: rotateY(0deg);
    }
    25% {
        -webkit-transform: rotateY(360deg) rotateX(10deg);
    }
    50% {
        -webkit-transform: rotateY(720deg) rotateX(-10deg);
    }
    75% {
        -webkit-transform: rotateY(1080deg) rotateX(10deg);
    }
    100% {
        -webkit-transform: rotateY(1440deg) rotateX(-10deg);;
    }
}