#install-popup{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#fff;padding:15px;border-radius:10px;box-shadow:0 4px 6px rgba(0,0,0,.1);text-align:center;z-index:1000}#install-popup button{margin:5px;padding:10px 15px;border:none;border-radius:5px;cursor:pointer}#install-popup button:first-child{background:#007bff;color:#fff}#install-popup button:last-child{background:#ccc;color:#000}