body {
    font-family: Arial, sans-serif;
    background: #f4f7fa;
    color: #333;
    margin: 0;
    padding: 2em;
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    margin-bottom: 1.5em;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin: 0.5em 0 0.2em;
}

input {
    padding: 0.5em;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    margin-top: 1em;
    padding: 0.7em;
    background-color: #007bff;
    border: none;
    color: white;
    font-size: 1em;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

#result {
    margin-top: 2em;
    font-size: 1.2em;
    text-align: center;
}