title: im including php file but after that my css and bootstrap is not working
body: <p>im including <code>db.php</code> on the top of index.php file..but after including it my css and bootstrap is not working</p>
  
  <ol>
  <li><p>this is my php file which im including. <code>includes</code> inside include is a folder and db.php file is inside it</p>
  
  <pre><code>&lt;?php 
  include("includes/db.php");
  ?&gt;
  </code></pre></li>
  </ol>
  
  <p>2.this is html code</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
      &lt;title&gt;E-COMMERCE&lt;/title&gt;
      &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"&gt;
      &lt;link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"&gt;
      &lt;link rel="stylesheet" type="text/css" href="style/style.css"&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
  &lt;div id="top"&gt;
      &lt;div class="container"&gt;
         &lt;div class="col-md-6 offer"&gt;
           &lt;a href="#" class="btn btn-success btn-sm"&gt;welcome guest&lt;/a&gt;
           &lt;a href="#"&gt;shopping card total price:inr 100,total item 2 &lt;/a&gt;
         &lt;/div&gt;
         &lt;div class="col-md-6"&gt;
           &lt;ul class="menu"&gt;
              &lt;li&gt;&lt;a href="registration.php"&gt;register&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="customer/my_account.php"&gt;my account&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;go to cart&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;login&lt;/a&gt;&lt;/li&gt;
           &lt;/ul&gt;
         &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  
  
  </code></pre>
  
  <p>3.this is the php code for dynamic slider</p>
  
  <pre><code>&lt;?php
  $get_table="select * from slider LIMIT 0,1";
  $run_slider=mysqli_query($con,$get_table);
  while($row=mysqli_fetch_array($run_slider)){
      $slider_name=$row['slider_name'];
      $slider_image=$row['slider-image'];
      echo "&lt;div class='item active'&gt;
          &lt;img src='admin_area/slider/$slider_image' alt='$slider_name'&gt;
          &lt;/div&gt;";
  }
  ?&gt;
  
  &lt;?php
  $get_table="select * from slider LIMIT 1,3";
  $run_slider=mysqli_query($con,$get_table);
  while($row=mysqli_fetch_array($run_slider)) {
      $slider_name=$row['slider_name'];
      $slider_image=$row['slider-image'];
      echo "&lt;div class='item'&gt;
          &lt;img src='admin_area/slider/$slider_image' alt='$slider_name' &gt;
          &lt;/div&gt;";
  }
  
  ?&gt;
  </code></pre>