MediaWiki:Common.css

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.card-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1em;
    justify-content: space-between;
}

.card {
    flex: 1 1 calc(33.333% - 1em); /* 3 columns with spacing */
    box-sizing: border-box;
}

/* Adjust for tablets */
@media (max-width: 768px) {
    .card {
        flex: 1 1 calc(50% - 1em); /* 2 columns */
    }
}

/* Adjust for mobile */
@media (max-width: 480px) {
    .card {
        flex: 1 1 100%; /* 1 column */
    }
}