#preloader {
    position: fixed;
    inset: 0;
    z-index: 999999;
    overflow: hidden;
    background: #fff;

    display: flex;
    align-items: center;
    justify-content: center;

    opacity: 1;
    visibility: visible;
    transition:
        opacity 0.6s ease,
        visibility 0.6s ease;
}

#preloader::before {
    content: "";
    width: 60px;
    height: 60px;

    border: 6px solid #ffffff;
    border-color: #1D4ED8 transparent #1D4ED8 transparent;

    border-radius: 50%;
    animation: animate-preloader 1.5s linear infinite;
}

@keyframes animate-preloader {
    0% {
        transform: rotate(0deg);
    }

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

#preloader.preloader-hidden {
    opacity: 0;
    visibility: hidden;
}