*{box-sizing:border-box;margin:0;padding:0}body{background-color:#f2f2f2;font-family:Arial,sans-serif}.container{max-width:800px;margin:0 auto;padding:20px}h1{font-size:2rem;margin-bottom:20px}textarea{width:100%;padding:10px;border:none;border-radius:5px;margin-bottom:20px;font-size:1.2rem;resize:vertical}button{padding:10px 20px;border:none;border-radius:5px;background-color:#4CAF50;color:#fff;font-size:1.2rem;cursor:pointer;margin-bottom:20px}button:hover{background-color:#3e8e41}#output-text{border:1px solid #ccc;border-radius:5px;padding:10px;font-size:1.2rem;background-color:#fff;white-space:pre-line}