body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1em;
    text-align: center;
}

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

.gallery {
    display: flex;
    justify-content: space-around;
}

.gallery img {
    width: 200px;
    height: auto;
    border: 1px solid #ddd;
}

footer {
    text-align: center;
    padding: 1em;
    background-color: #333;
    color: #fff;
}