body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    margin-bottom: 20px;
}

/* Flexbox Gallery */
.gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

/* 4 Columns (Desktop) */
.gallery img {
    width: calc(25% - 15px);
    height: 220px;
    object-fit: cover;
    border-radius: 8px;
}

/* 3 Columns */
@media (max-width: 1000px) {
    .gallery img {
        width: calc(33.33% - 15px);
    }
}

/* 2 Columns */
@media (max-width: 700px) {
    .gallery img {
        width: calc(50% - 15px);
    }
}

/* 1 Column */
@media (max-width: 420px) {
    .gallery img {
        width: 100%;
    }
}