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

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

nav {
    display: flex;
    justify-content: center;
    background: #444;
    padding: 0.5rem;
}

.tab-btn {
    background: #555;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    margin: 0 0.5rem;
    cursor: pointer;
    border-radius: 5px;
}

.tab-btn.active {
    background: #007BFF;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 1rem;
}

.photo {
    background: white;
    margin: 1rem;
    padding: 1rem;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

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

.buy-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    margin-top: 0.5rem;
    cursor: pointer;
    border-radius: 5px;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: white;
}