body {
    font-family: 'Helvetica Neue', sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background: #333;
    color: #fff;
    padding: 2rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

nav {
    background: #444;
    padding: 1rem;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 1rem;
    margin: 0 1rem;
}

nav a:hover {
    background: #555;
}

main {
    padding: 2rem;
}

section {
    margin-bottom: 2rem;
}

.year-section h3 {
    border-bottom: 2px solid #333;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    transition: .5s ease;
    background-color: rgba(0,0,0,0.5);
}

.gallery-item:hover .overlay {
    opacity: 1;
}

.text {
    color: white;
    font-size: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    position: relative;
    bottom: 0;
    width: 100%;
}