body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 1em 0;
    text-align: center;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 2em;
}

h1, h2 {
    color: #333;
}

footer {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1em 0;
}

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

form label {
    margin-top: 1em;
}

form input, form textarea {
    padding: 0.5em;
    margin-top: 0.5em;
}

form button {
    margin-top: 1em;
    padding: 0.7em;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}