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

.display-block {
    display: block !important;
}
.loading-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-visible {
    opacity: 1;
    visibility: visible;
}

#loading-sign {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}