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

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

h1 {
    margin: 0;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin: 1rem;
    justify-content: center;
}

.gallery-item {
    width: 100%;
    aspect-ratio: 1 / 1; /* Ensures images remain square */
    object-fit: cover; /* Ensures the images fill the square */
    cursor: pointer;
    border: 2px solid #ddd;
    border-radius: 5px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    max-width: 50%;
    max-height: 80%;
}

.close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2rem;
    color: #fff;
    cursor: pointer;
}