#overlayLoaderCircle {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity .6s ease, visibility .6s ease;
}

#overlayLoaderCircle.show {
    opacity: 1;
    visibility: visible;
}

#loaderCircle {
    border: .6rem solid #f3f3f3;
    border-top: .6rem solid #4680ff;
    border-radius: 50%;
    width: 5rem;
    height: 5rem;
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}