body {
    font-family: sans-serif;
    margin: 20px;
    background-color: #f0f8ff; /* Light blue background */
    color: #333;
}

h1 {
    color: #2e8b57; /* Sea green color */
    font-size: 2.5em;
    margin-bottom: 20px;
}

h2 {
    color: #2e8b57; /* Sea green color */
    font-size: 2em;
}

h3 {
    color: #2e8b57; /* Sea green color */
    font-size: 1.5em;
}

form {
    display: flex;
    flex-direction: column;
    max-width: 400px;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
    margin-top: 10px;
    font-weight: bold;
}

input, select {
    margin-bottom: 10px;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

button {
    padding: 10px;
    background-color: #4CAF50; /* Green color */
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}

button:hover {
    background-color: #45a049; /* Darker green */
}

.error {
    color: red;
    margin-top: 10px;
}

.output {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
}

.output p {
    font-size: 1.2em;
    line-height: 1.5;
}