* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.banner-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    padding: 12px;
}

.banner-card {
    overflow: hidden;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
}

.banner-card img {
    width: 100%;
    display: block;
    height: auto;
}

/* Keep 4 columns even on mobile */
@media (max-width: 768px) {
    .banner-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
    }
}