html,body{margin:0;padding:0;height:100%;font-family:Arial,sans-serif;background-color:black;color:red;display:flex;flex-direction:column}.container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding:20px;text-align:center}.container h2,.container p{color:white}#converter-iframe{width:520px;height:520px;border:none;border-radius:10px;background:#1a1a1a}