#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
#preloader img {
    width: 100px;
    height: auto;
    animation: girar 2s linear infinite;
}
@keyframes girar {
    0%   { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}