body {
    font-family: sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background-color: #fff;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
}

h1 {
    text-align: center;
    color: #4a4a4a;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1em;
}

label {
    font-weight: bold;
}

input,
select,
button {
    padding: 0.8em;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

button {
    background-color: #007bff;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

#result {
    margin-top: 1.5em;
    padding: 1em;
    background-color: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 4px;
}