body{font-family:Arial,sans-serif;text-align:center;background-color:#f4f4f4;margin:0;padding:0}h1{color:#0074cc}.input-container{margin:10px}input{padding:10px;border:2px solid #0074cc;border-radius:5px;width:200px}button{background-color:#0074cc;color:#fff;padding:10px 20px;border:none;border-radius:5px;cursor:pointer}button:hover{background-color:#0056b3}#result{font-weight:700;margin:20px;color:#0074cc;font-size:20px}