body {
    font-family: 'Orbitron', sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
}
.loader {
    border: 4px solid #4b5563;
    border-top: 4px solid #3b82f6;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}