body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header, footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1em 0;
}
nav {
    display: flex;
    justify-content: center;
    background-color: #444;
    padding: 0.5em 0;
}
nav a {
    color: white;
    text-decoration: none;
    margin: 0 1em;
}
nav a:hover {
    text-decoration: underline;
}
.gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.gallery img {
    max-width: 150px;
    cursor: pointer;
    transition: transform 0.2s;
}
.gallery img:hover {
    transform: scale(1.1);
}
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
}
.modal img {
    max-width: 90%;
    max-height: 90%;
}
.modal:target {
    display: flex;
}