title: Add css js to a plugin wordpress which call a shortcode
body: <p>I have to do a wp plugin, it calls a page with a shortcode:</p>
  
  <pre><code>    function shortcode_flexSlide(){
      include ('eleve.php'); 
  
      }
  add_shortcode('flexSlide', 'shortcode_flexSlide');
  </code></pre>
  
  <p>And now I must load css and js link to the page 'eleve.php'</p>
  
  <p>I have already tried the following: </p>
  
  <pre><code> wp_enqueue_script( 'flexSlideStyle', plugins_url( '/css/style.css', __FILE__ ));
  </code></pre>
  
  <p>But it looks at wp root dir  + /css/style.css</p>