.z-n1 {
    z-index: -1 !important;
}

.z-0 {
    z-index: 0 !important;
}

.z-1 {
    z-index: 1 !important;
}

.z-2 {
    z-index: 2 !important;
}

.z-3 {
    z-index: 3 !important;
}

.z-4 {
    z-index: 4 !important;
}

.z-5 {
    z-index: 5 !important;
}

.z-6 {
    z-index: 6 !important;
}

.z-7 {
    z-index: 7 !important;
}

.z-8 {
    z-index: 8 !important;
}

.z-9 {
    z-index: 9 !important;
}

.z-10 {
    z-index: 10 !important;
}

.z-50 {
    z-index: 50 !important;
}

@media (min-width: 992px) {
    .z-lg-auto {
        z-index: auto !important;
    }
}