#preloader {
    position: fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:white;
    display:flex;
    align-items:center;
    justify-content:center;
    z-index:1000;
}

.spinner {
    width:60px;
    height:60px;
    border:6px solid #f3f3f3;
    border-top:6px solid #ffa500;
    border-radius:50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}