html {
    position: relative;
    min-height: 100%;
}

.carousel-fade .carousel-inner .item {
    opacity: 0;
    transition-property: opacity;
}

.carousel-fade .carousel-inner .active {
    opacity: 1;
}

    .carousel-fade .carousel-inner .active.left,
    .carousel-fade .carousel-inner .active.right {
        left: 0;
        opacity: 0;
        z-index: 1;
    }

.carousel-fade .carousel-inner .next.left,
.carousel-fade .carousel-inner .prev.right {
    opacity: 1;
}

.carousel-fade .carousel-control {
    z-index: 2;
}

@media all and (transform-3d), (-webkit-transform-3d) {
    .carousel-fade .carousel-inner > .item.next,
    .carousel-fade .carousel-inner > .item.active.right {
        opacity: 0;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }

    .carousel-fade .carousel-inner > .item.prev,
    .carousel-fade .carousel-inner > .item.active.left {
        opacity: 0;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }

        .carousel-fade .carousel-inner > .item.next.left,
        .carousel-fade .carousel-inner > .item.prev.right,
        .carousel-fade .carousel-inner > .item.active {
            opacity: 1;
            -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
        }
}

.item:nth-child(1) {
    background: url('../images/pbibg01.jpg') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.item:nth-child(2) {
    background: url('../images/pbibg02.jpg') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.item:nth-child(3) {
    background: url('../images/pbibg03.jpg') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.item:nth-child(4) {
    background: url('../images/pbibg04.jpg') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.carousel {
    z-index: -99;
}

    .carousel .item {
        position: fixed;
        width: 100%;
        height: 100%;
    }