html,
body {
    width: 100%;
    padding: 0;
    margin: 0;
}

#content-body {
    line-height: 2
}

/* Basic */

@-ms-viewport {
    width: device-width;
}

@media screen and (max-width: 480px) {

    html,
    body {
        min-width: 320px;
    }
}

@media screen and (max-height: 640px) {

    html,
    body {
        height: auto;
        min-height: 100%;
    }
}

body {
    display: -moz-flex;
    display: -webkit-flex;
    display: -ms-flex;
    display: flex;
    -moz-flex-direction: column;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    -moz-justify-content: center;
    -webkit-justify-content: center;
    -ms-justify-content: center;
    justify-content: center;
    background-color: RGBA(0, 0, 0, 0.74);
}

body>* {
    position: relative;
    z-index: 2;
}


/* BG */

#bg {
    -moz-transition: opacity 2s ease-in-out;
    -webkit-transition: opacity 2s ease-in-out;
    -ms-transition: opacity 2s ease-in-out;
    transition: opacity 2s ease-in-out;
    height: 100%;
    left: 0;
    opacity: 0.25;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: -10;
}

#bg div {
    -moz-transition: opacity 3s ease, visibility 3s;
    -webkit-transition: opacity 3s ease, visibility 3s;
    -ms-transition: opacity 3s ease, visibility 3s;
    transition: opacity 3s ease, visibility 3s;
    background-size: cover;
    height: 100%;
    left: 0;
    opacity: 0;
    position: absolute;
    top: 0;
    visibility: hidden;
    width: 120%;
}

#bg div.visible {
    -moz-animation: bg 45s linear infinite;
    -webkit-animation: bg 45s linear infinite;
    -ms-animation: bg 45s linear infinite;
    animation: bg 45s linear infinite;
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

#bg div.visible.top {
    z-index: 2;
}

@media screen and (max-width: 1280px) {
    #bg div.visible {
        -moz-animation: bg 29.25s linear infinite;
        -webkit-animation: bg 29.25s linear infinite;
        -ms-animation: bg 29.25s linear infinite;
        animation: bg 29.25s linear infinite;
    }
}

@media screen and (max-width: 736px) {
    #bg div.visible {
        -moz-animation: bg 18s linear infinite;
        -webkit-animation: bg 18s linear infinite;
        -ms-animation: bg 18s linear infinite;
        animation: bg 18s linear infinite;
    }
}

#bg div:only-child {
    -moz-animation-direction: alternate !important;
    -webkit-animation-direction: alternate !important;
    -ms-animation-direction: alternate !important;
    animation-direction: alternate !important;
}

body.is-loading #bg {
    opacity: 0;
}

@-moz-keyframes bg {
    0% {
        -moz-transform: translateX(0);
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }

    100% {
        -moz-transform: translateX(-25%);
        -webkit-transform: translateX(-25%);
        -ms-transform: translateX(-25%);
        transform: translateX(-25%);
    }
}

@-webkit-keyframes bg {
    0% {
        -moz-transform: translateX(0);
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }

    100% {
        -moz-transform: translateX(-25%);
        -webkit-transform: translateX(-25%);
        -ms-transform: translateX(-25%);
        transform: translateX(-25%);
    }
}

@-ms-keyframes bg {
    0% {
        -moz-transform: translateX(0);
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }

    100% {
        -moz-transform: translateX(-25%);
        -webkit-transform: translateX(-25%);
        -ms-transform: translateX(-25%);
        transform: translateX(-25%);
    }
}

@keyframes bg {
    0% {
        -moz-transform: translateX(0);
        -webkit-transform: translateX(0);
        -ms-transform: translateX(0);
        transform: translateX(0);
    }

    100% {
        -moz-transform: translateX(-25%);
        -webkit-transform: translateX(-25%);
        -ms-transform: translateX(-25%);
        transform: translateX(-25%);
    }
}