.gu-mirror {
    position: fixed !important;
    margin: 0 !important;
    z-index: 9999 !important;

    color: color($gray);
    box-shadow: module(shadow);

    & * {
        box-sizing: border-box;
        position: relative;
    }

    & :before,
    & :after {
        box-sizing: border-box;
    }
}

.gu-hide {
    display: none !important;
}

.gu-unselectable {
    user-select: none !important;
}

.gu-transit {
    background-color: color($gray, lighter);
    opacity: .35;
}