body {
    background-color: #ffff00;
    color: #00ff00;
    font-family: 'Comic Sans MS', sans-serif;
    text-align: center;
}

header, main, footer {
    margin: 20px;
    padding: 20px;
    border: 5px solid #ff0000;
}

a {
    color: #ff00ff;
    text-decoration: none;
}

img {
    margin: 10px;
}