* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    text-align: center;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #4CAF50;
    color: white;
}

section {
    padding: 20px;
    margin: 20px;
    text-align: center;
}

section img {
    width: 100%;
    max-width: 400px;
    margin-top: 20px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    position: fixed;
    width: 100%;
    bottom: 0;
}