*{box-sizing:border-box}body{display:flex;justify-content:center;min-height:100vh;margin:0;padding:20px}.container{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;font-size:16px;width:100%;max-width:800px;padding-top:5vh}#input{font-family:inherit;font-size:inherit;width:100%;padding:10px 13px;border:1px solid #c0c0c0;border-radius:8px;box-shadow:0 2px 5px #0000000d;outline:none;color:#444}#input:disabled{color:#999;background-color:#f0f0f0;border-color:#d0d0d0;cursor:not-allowed}#output{width:100%;padding:15px 10px;color:#444;line-height:1.6}