body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: 'Arial', sans-serif;
    background: #fff;
}

header {
    background-color: #444;
    color: white;
    padding: 10px 0;
    text-align: center;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 10px;
}

.image-cell img {
    width: 100%;
    height: auto;
    display: block;
}

footer {
    background-color: #444;
    color: white;
    text-align: center;
    padding: 20px 0;
}

.contact-info p, .contact-info a {
    color: white;
    text-decoration: none;
}

@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: 1fr;
    }
}