#preloader{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:#0a0a0a;
    display:flex;
    justify-content:center;
    align-items:center;
    z-index:999999;
    transition:opacity .5s;
}

#preloader img{
    width:200px;
}