.container{text-align:center;max-width:500px;margin:150px auto;padding:20px;background-color:#f9f9f9;border-radius:10px;box-shadow:0 0 10px #0000001a}h1{color:#333}.input-group{margin:10px 0}.input-group label{font-size:16px;color:#555;display:block;margin-bottom:5px}.input-group input{padding:10px;border:1px solid #ccc;border-radius:5px;font-size:16px;width:calc(100% - 22px);box-sizing:border-box}button{color:#fff;padding:10px 20px;background-color:#007bff;border:none;cursor:pointer;border-radius:5px;font-size:16px;margin-top:10px}button:hover{background-color:#0056b3}.result{margin-top:20px;color:#333}