#preloader {
    position: fixed;
    inset: 0;
    background: #ffffff;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader {
    width: 45px;
    height: 45px;
    border: 3px solid #eee;
    border-top: 3px solid #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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