.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background-repeat: no-repeat;
    background-color: white;
    background-position: center;
}

.sp {
    height: 50px;
    content:url("https://nauka.gov.ua/static/logo-small.3f38f98f1cf3.svg") !important;
}