body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f7f7f7;
    color: #333;
}

header {
    background-color: #4a76a8;
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav a {
    color: white;
    margin-left: 1rem;
    text-decoration: none;
}

main {
    padding: 2rem;
}

.gallery {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.gallery img {
    width: 48%;
    max-width: 300px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.button {
    display: inline-block;
    background-color: #4a76a8;
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 8px;
    margin-top: 1rem;
}

.button.disabled {
    background-color: gray;
    pointer-events: none;
}

footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    background-color: #eee;
}