.flip-container {
    -webkit-perspective: 1000;
    -moz-perspective: 1000;
    -o-perspective: 1000;
    perspective: 1000;

    /* 1 */
    /* For Firefox <= 15 to apply perspective. Without these two lines transformation will be flat.
    This fix, however, doesn’t apply if we put overflow property on the element being fixed.
    */
    -moz-transform: perspective(1000px);
    -moz-transform-style: preserve-3d;
}

.flipper {
    -moz-transform: perspective(1000px);
    -moz-transform-style: preserve-3d;

    position: relative;
}

.front, .back {
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -o-backface-visibility: hidden;
    backface-visibility: hidden;

    -webkit-transition: 0.6s;
    -webkit-transform-style: preserve-3d;

    -moz-transition: 0.6s;
    -moz-transform-style: preserve-3d;

    -o-transition: 0.6s;
    -o-transform-style: preserve-3d;

    -ms-transition: 0.6s;
    -ms-transform-style: preserve-3d;

    transition: 0.6s;
    transform-style: preserve-3d;


    position: absolute;
    top: 0;
    left: 0;
}

.front {
    -webkit-transform: rotateY(-180deg);
    -moz-transform: rotateY(-180deg);
    -o-transform: rotateY(-180deg);
    -ms-transform: rotateY(-180deg);
    transform: rotateY(-180deg);
}

.no-csstransforms3d .flip-container.flip_on .back {
    display: none;
}
.no-csstransforms3d .flip-container.flip_on .front {
    display: block;
}

.flip-container.flip_on .front {
    -webkit-transform: rotateY(0deg);
    -moz-transform: rotateY(0deg);
    -o-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    transform: rotateY(0deg);
}

.flip-container.flip_on .back {
    -webkit-transform: rotateY(180deg);
    -moz-transform: rotateY(180deg);
    -o-transform: rotateY(180deg);
    transform: rotateY(180deg);
}


.back {
    z-index: 2;

    /* 2 */
    /*Fix for Chrome, version <= 22*/

    -webkit-transform: rotateY(0deg);

    /* or this
    -webkit-transform: translate3d(0, 0, 0);
     any property that triggers hardware acceleration will do the trick
    */
}