.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #778e36;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.preloader img{
    height: 600px;
    width: auto;
}