body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

header {
    background-color: #2832c9;
    color: #fff;
    text-align: center;
    padding: 20px;
}

nav ul {
    list-style: none;
    padding: 0;
    background-color: #333;
    text-align: center;
}

nav ul li {
    display: inline;
    margin-right: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

footer {
    text-align: center;
    background-color: #333333;
    color: #fff;
    padding: 10px;
}