title: How to customize Flash Message with inline css in cakephp3
body: <p>In my Controller :</p>
  
  <pre><code>$this-&gt;Flash-&gt;success(__(' Your Data has been Saved Successfully. Sheets Name in this XLS file : &lt;span style="color:#FF9900"&gt; '.$SheetName.'&lt;/span&gt;'));
  </code></pre>
  
  <p>In my success.ctp located in Element\Falsh :</p>
  
  <pre><code>&lt;div class="alert alert-success fade in" onclick="this.classList.add('hidden')"&gt; &lt;a href="#" class="close" data-dismiss="alert"&gt;&amp;times;&lt;/a&gt; &lt;strong&gt;Success!&lt;/strong&gt; &lt;?= h($message) ?&gt; &lt;/div&gt;
  </code></pre>
  
  <p>The Message is display like :<a href="https://i.stack.imgur.com/JlxYk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JlxYk.png" alt="enter image description here"></a></p>
  
  <p>Now the question is how to use inline css in the flash message.</p>