.screen-darken {
    content: '';
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .5);
    pointer-events: none;
    z-index: 10;
    opacity: 1;
    visibility: visible;
    position: fixed;
}

.navbar {
    position: relative;
    z-index: 15;
}

.min500 {
    min-height: 500px;
}