body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f8f4;
    color: #333;
}
header {
    background: #2e7d32;
    color: #fff;
    padding: 1em;
    text-align: center;
}
nav a {
    color: #fff;
    margin: 0 1em;
    text-decoration: none;
}
main {
    max-width: 800px;
    margin: 2em auto;
    padding: 1em;
    background: #fff;
    border-radius: 8px;
}
section {
    margin-bottom: 2em;
}
footer {
    text-align: center;
    padding: 1em;
    background: #e0e0e0;
    color: #555;
}
form input, form textarea {
    display: block;
    width: 100%;
    margin-bottom: 1em;
    padding: 0.5em;
}
form button {
    background: #2e7d32;
    color: #fff;
    border: none;
    padding: 0.7em 1.5em;
    border-radius: 4px;
    cursor: pointer;
}