ul.social-rss{
    list-style:none;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

ul.social-rss li{
    width: 200px;
    height: 200px;
    margin: 10px;
}

ul.social-rss li img{
   width: 100%;
   height: 100%;
   object-fit: cover;
   object-position: center;
}