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

header, footer {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

h2 {
    color: #333;
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
}

.image-placeholder {
    width: 100%;
    height: 300px;
    background-color: #ccc;
    margin-top: 20px;
}