body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #fff;
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

header img {
    max-width: 100%;
    height: auto;
}

nav ul {
    margin: 20px 0 0;
    padding: 0;
    list-style: none;
}

nav ul li {
    display: inline-block;
    margin: 0 10px;
}

nav a {
    text-decoration: none;
    color: #555;
    font-weight: bold;
}

main {
    padding: 20px;
}

main section {
    background-color: #fff;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
}

footer ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

footer ul li {
    display: inline;
    margin: 0 10px;
}

footer a {
    color: #fff;
    text-decoration: none;
}