Anto

    <!-- Portfolio Grid Section -->
    <section class="portfolio" id="portfolio">
      <div class="container">
        <h2 class="text-center text-uppercase text-secondary mb-0">Portfolio</h2>
        <hr class="star-dark mb-5">
        <div class="row">
        <?php $sql=mysql_query("select*from datakost")or die(mysql_error());
        $i=0;
        while($data=mysql_fetch_array($sql)){
        $i++;
        ?>
          <div class="col-md-6 col-lg-4">
            <a class="" href="detail.php?id=<?php echo $data['kdvt'];?>" >
              <img class="img-fluid" src="admin/upload/<?php echo $data['foto']; ?>" alt="">
            </a>
          </div>
          <?php
          }
          ?>
          </div>
        </div>
      </div>
    </section>