.catforum_2 {
    background: url(https://www.demo.webgod.ro/img/slider.gif);
    background-position-x: 50%;
    background-position-y: 30%;
    background-size: cover;
}

.categ_15 {
    background: url(https://static.webgod.ro/banners/header.webp);
    background-position-x: 50%;
    background-position-y: 30%;
}