.loader-wrapper {
    position: fixed;
    z-index: 9999;
    height: 2em;
    width: 2em;
    margin: auto;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}

    .loader-wrapper:before {
        content: '';
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.4);
    }

    .loader-wrapper .loader {
        width: 148px;
        height: 100px;
        top: 0;
        left: 0;
        position: absolute;
    }

        .loader-wrapper .loader:after {
            content: "";
            top: auto;
            position: absolute;
            display: block;
            animation: shadow 1.2s infinite linear;
            -moz-animation: shadow 1.2s infinite linear;
            bottom: 0em;
            left: 0;
            height: 0.25em;
            width: 1em;
            border-radius: 50%;
            background-color: #034466;
            opacity: 0.3;
        }

        .loader-wrapper .loader .roller,
        .loader-wrapper .loader .roller:last-child {
            width: 70px;
            height: 70px;
            position: absolute;
            top: 0;
            left: 0;
            -webkit-animation: rollercoaster 1.2s infinite linear;
            -webkit-transform: rotate(135deg);
            -moz-animation: rollercoaster 1.2s infinite linear;
            -moz-transform: rotate(135deg);
            animation: rollercoaster 1.2s infinite linear;
            transform: rotate(135deg);
        }

            .loader-wrapper .loader .roller:last-child {
                left: auto;
                right: 0;
                -webkit-transform: rotate(-45deg);
                -webkit-animation: rollercoaster2 1.2s infinite linear;
                -moz-transform: rotate(-45deg);
                -moz-animation: rollercoaster2 1.2s infinite linear;
                transform: rotate(-45deg);
                animation: rollercoaster2 1.2s infinite linear;
            }

                .loader-wrapper .loader .roller:before,
                .loader-wrapper .loader .roller:last-child:before {
                    content: "";
                    display: block;
                    width: 15px;
                    height: 15px;
                    background: #000;
                    border-radius: 50%;
                }

        .loader-wrapper .loader.loader-2:after {
            -webkit-animation-delay: 0.15s;
            animation-delay: 0.15s;
        }

        .loader-wrapper .loader.loader-2 .roller {
            -webkit-animation-delay: 0.15s;
            animation-delay: 0.15s;
        }

        .loader-wrapper .loader.loader-3:after {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }

        .loader-wrapper .loader.loader-3 .roller {
            -webkit-animation-delay: 0.3s;
            animation-delay: 0.3s;
        }

@-webkit-keyframes rollercoaster {
    0% {
        -webkit-transform: rotate(135deg);
    }

    8% {
        -webkit-transform: rotate(240deg);
    }

    20% {
        -webkit-transform: rotate(300deg);
    }

    40% {
        -webkit-transform: rotate(380deg);
    }

    45% {
        -webkit-transform: rotate(440deg);
    }

    50% {
        -webkit-transform: rotate(495deg);
        opacity: 1;
    }

    50.1% {
        -webkit-transform: rotate(495deg);
        opacity: 0;
    }

    100% {
        -webkit-transform: rotate(495deg);
        opacity: 0;
    }
}

@-webkit-keyframes rollercoaster2 {
    0% {
        opacity: 0;
    }

    49.9% {
        opacity: 0;
    }

    50% {
        opacity: 1;
        -webkit-transform: rotate(-45deg);
    }

    58% {
        -webkit-transform: rotate(-160deg);
    }

    70% {
        -webkit-transform: rotate(-240deg);
    }

    80% {
        -webkit-transform: rotate(-300deg);
    }

    90% {
        -webkit-transform: rotate(-340deg);
    }

    100% {
        -webkit-transform: rotate(-405deg);
    }
}

@-webkit-keyframes shadow {
    0% {
        opacity: 0.3;
        -webkit-transform: translateX(65px) scale(0.5, 0.5);
    }

    8% {
        -webkit-transform: translateX(30px) scale(2, 2);
    }

    13% {
        -webkit-transform: translateX(0px) scale(1.3, 1.3);
    }

    30% {
        -webkit-transform: translateX(-15px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    50% {
        -webkit-transform: translateX(60px) scale(1.2, 1.2);
        opacity: 0.3;
    }

    60% {
        -webkit-transform: translateX(130px) scale(2, 2);
        opacity: 0.05;
    }

    65% {
        -webkit-transform: translateX(145px) scale(1.2, 1.2);
    }

    80% {
        -webkit-transform: translateX(120px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    90% {
        -webkit-transform: translateX(80px) scale(0.8, 0.8);
    }

    100% {
        -webkit-transform: translateX(60px);
        opacity: 0.3;
    }
}
/* Moz */
@-moz-keyframes rollercoaster {
    0% {
        -moz-transform: rotate(135deg);
    }

    8% {
        -moz-transform: rotate(240deg);
    }

    20% {
        -moz-transform: rotate(300deg);
    }

    40% {
        -moz-transform: rotate(380deg);
    }

    45% {
        -moz-transform: rotate(440deg);
    }

    50% {
        -moz-transform: rotate(495deg);
        opacity: 1;
    }

    50.1% {
        -moz-transform: rotate(495deg);
        opacity: 0;
    }

    100% {
        -moz-transform: rotate(495deg);
        opacity: 0;
    }
}

@-moz-keyframes rollercoaster2 {
    0% {
        opacity: 0;
    }

    49.9% {
        opacity: 0;
    }

    50% {
        opacity: 1;
        -moz-transform: rotate(-45deg);
    }

    58% {
        -moz-transform: rotate(-160deg);
    }

    70% {
        -moz-transform: rotate(-240deg);
    }

    80% {
        -moz-transform: rotate(-300deg);
    }

    90% {
        -moz-transform: rotate(-340deg);
    }

    100% {
        -moz-transform: rotate(-405deg);
    }
}

@-moz-keyframes shadow {
    0% {
        opacity: 0.3;
        -moz-transform: translateX(65px) scale(0.5, 0.5);
    }

    8% {
        -moz-transform: translateX(30px) scale(2, 2);
    }

    13% {
        -moz-transform: translateX(0px) scale(1.3, 1.3);
    }

    30% {
        -moz-transform: translateX(-15px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    50% {
        -moz-transform: translateX(60px) scale(1.2, 1.2);
        opacity: 0.3;
    }

    60% {
        -moz-transform: translateX(130px) scale(2, 2);
        opacity: 0.05;
    }

    65% {
        -moz-transform: translateX(145px) scale(1.2, 1.2);
    }

    80% {
        -moz-transform: translateX(120px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    90% {
        -moz-transform: translateX(80px) scale(0.8, 0.8);
    }

    100% {
        -moz-transform: translateX(60px);
        opacity: 0.3;
    }
}
/* No-prefix */
@keyframes rollercoaster {
    0% {
        transform: rotate(135deg);
    }

    8% {
        transform: rotate(240deg);
    }

    20% {
        transform: rotate(300deg);
    }

    40% {
        transform: rotate(380deg);
    }

    45% {
        transform: rotate(440deg);
    }

    50% {
        transform: rotate(495deg);
        opacity: 1;
    }

    50.1% {
        transform: rotate(495deg);
        opacity: 0;
    }

    100% {
        transform: rotate(495deg);
        opacity: 0;
    }
}

@keyframes rollercoaster2 {
    0% {
        opacity: 0;
    }

    49.9% {
        opacity: 0;
    }

    50% {
        opacity: 1;
        transform: rotate(-45deg);
    }

    58% {
        transform: rotate(-160deg);
    }

    70% {
        transform: rotate(-240deg);
    }

    80% {
        transform: rotate(-300deg);
    }

    90% {
        transform: rotate(-340deg);
    }

    100% {
        transform: rotate(-405deg);
    }
}

@keyframes shadow {
    0% {
        opacity: 0.3;
        transform: translateX(65px) scale(0.5, 0.5);
    }

    8% {
        transform: translateX(30px) scale(2, 2);
    }

    13% {
        transform: translateX(0px) scale(1.3, 1.3);
    }

    30% {
        transform: translateX(-15px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    50% {
        transform: translateX(60px) scale(1.2, 1.2);
        opacity: 0.3;
    }

    60% {
        transform: translateX(130px) scale(2, 2);
        opacity: 0.05;
    }

    65% {
        transform: translateX(145px) scale(1.2, 1.2);
    }

    80% {
        transform: translateX(120px) scale(0.5, 0.5);
        opacity: 0.1;
    }

    90% {
        transform: translateX(80px) scale(0.8, 0.8);
    }

    100% {
        transform: translateX(60px);
        opacity: 0.3;
    }
}