body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    width: 80%;
    max-width: 600px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

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

label {
    margin-top: 1rem;
}

input, select {
    margin-bottom: 1rem;
    padding: 0.5rem;
    font-size: 1rem;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 0.75rem;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

button:hover {
    background-color: #45a049;
}

#result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    font-weight: bold;
}

.success {
    background-color: #dff0d8;
    color: #3c763d;
}

.error {
    background-color: #f2dede;
    color: #a94442;
}