Responsive nasıl yapılır?

<table class="table w-100 mx-auto mt-2 background2 mt-4">
    <thead>
        <tr class="table-dark">
            <th scope="col">ID</th>
            <th scope="col">Zimmet Tarihi</th>
            <th scope="col">Marka</th>
            <th scope="col">Model</th>
            <th scope="col">Türü</th>
            <th scope="col">Özellikleri</th>
            <th scope="col">Seri No/IMEI</th>
            <th scope="col">Durum</th>
            <th scope="col">Kimde</th>
            <th scope="col">Detay</th>
            <th scope="col">İşlem</th>
        </tr>
    </thead>
    <tbody>

    <?php
    foreach($sorgu as $yaz){ ?>
        <tr>
            <td><?= $yaz["ID"] ?></td>
            <td><?= $yaz["ZTarihi"] ?></td>
            <td><?= $yaz["Marka"] ?></td>
            <td><?= $yaz["Model"] ?></td>
            <td><?= $yaz["Tur"] ?></td>
            <td><?= $yaz["Ozellikleri"] ?></td>
            <td><?= $yaz["SeriNo"] ?></td>
            <th><?= $yaz["Durum"] ?></th>
            <td><?= $yaz["Kimde"] ?></td>
            <td><?= $yaz["Detay"] ?></td>

            <td>
                <a href="guncelle.php?benzersiz=<?= $yaz["ID"] ?>"><input type="button" value="Güncelle" class="btn btn-success" /></a>
                <a href="sil.php?benzersiz=<?= $yaz["ID"] ?>"><input type="button" value="Sil" class="btn btn-danger" /></a>
            </td>     
        </tr>
    <?php }
    if ($x==3)
    {
      echo '<div class="alert alert-danger w-25 mx-auto mt-3"> Filtreleme yaparken metin kutusunu boş bırakmayınız! </div>';
    }
    ?>
    </tbody>
</table>