#vista-ui { text-align:center; margin:10px; }
#vista-upload { padding:8px 16px; background:#0073aa; color:#fff; border:none; cursor:pointer; border-radius:4px; }
#vista-upload:hover { background:#005177; }
#vista-debug { margin-top:5px; color:#f55; font-family:monospace; }
#vista-frame { border:1px solid #444; }