.fav-btn{display:flex;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;padding:0;transition:opacity .2s;position:relative}@media(max-width:900px){.fav-btn:before{background-color:#0004;position:absolute;width:100%;height:100%;border-radius:50%;content:" "}}.fav-btn:hover{opacity:.7}