.loading-screen {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.6);
    transition: 0.2s;
    opacity: 0;
    visibility: hidden;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}


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


.loading-screen .spinner {
    width: 3rem; 
    height: 3rem;
    border-width: 4px;
    color: #fff;
}