title: I want to apply css class(bootstrap) .img-responsive on all content images
body: <p>I am developing a Wordpress theme with the help of bootstrap so I am manually applying cases on all content images like this:</p>
  
  <pre><code>&lt;img src="images/logo_03.png" class="img-responsive"&gt;
  </code></pre>
  
  <p>Is there any way to apply the same class properties automatically? I don't want to query for this purpose. I am sure bootstrap has a way to solve my problem, so let me know any solution with CSS.</p>