我的index.php：内容问题下方的侧栏

Question

此代码有什么问题？

我有两个问题：

1. 我的侧边栏移到了下面的内容。
2. 当我替换div并排显示帖子和侧边栏时，我的页脚移到侧边栏中。

所以，我无法解决问题：

<?php include 'includes/header.php'; ?>
<!--Start fluid container-------------------------------------------->
<div class="container-fluid mt-3">
     <div class="row my-row">
             <div class="card-deck">
			     <!--pagination-->
				 <?php
				     $per_page = 6;
					 if (isset($_GET["page"])){
						 $page = $_GET["page"];
					 } else {
						 $page=1;
					 }
					 $start_form = ($page-1) * $per_page;
				 ?>

				 <!--pagination-->
                     <?php
					  $query = "select * from tbl_post limit $start_form, $per_page";
					  $post = $db->select($query);
					  if ($post) {
						  while ($result = $post->fetch_assoc()) {
					 ?>
				         <div class="col-xs-12 col-sm-6 col-md-4">
                                 <h2><a href="post.php?id=<?php echo $result['id']; ?>"><?php echo $result['title']; ?></a></h2>
								     <h4><?php echo $fm->formatDate($result['date']); ?>, by<a href="#"><?php echo $result['author']; ?></a></h4>
								         <a href="#"><img class="img-fluid" src="admin/upload/<?php echo $result['image']; ?>"
													 alt="Card image" style="width:100%"/></a>

									         <?php echo $fm->textShorten($result['body'], 200); ?>

                              			 <div class="readmore clear">
     										 <a href="post.php?id=<?php echo $result['id']; ?>">ادامه مطلب</a>
										 </div>
                         </div>
						  <?php }?>
						  <!--end while loop-->
						  <!--pagination-->
						  <?php
						  $query = "select * from tbl_post";
						  $result = $db->select($query);
						  $total_rows = mysqli_num_rows($result);
						  $total_pages = ceil($total_rows/$per_page);

						  echo "<span class='pagination'><a href='index.php?page=1'>".'قبلی'."</a>";
						  for ($i=1; $i <= $total_pages; $i++) {
							  echo "<a href='index.php?page=".$i."'>".$i."</a>";
						  }
                          echo "<a href='index.php?page=$total_pages'>".'بعدی'."</a></span>"?>
						  <!--end pagination-->

					  <?php } else { header("location:404.php");} ?>
             </div>
<?php include 'includes/sidebar.php'; ?>
     </div>
</div>
<?php include 'includes/footer.php'; ?>

我很困惑。

我检查了所有div，但无法解决问题。

我该怎么办？