Add inline CSS in the image using TinyMCE
<p>I'm using <a href="https://www.tinymce.com/" rel="nofollow">Tiny MCE 4</a> for users posting on my website. It works very well, but the problem is that when a users puts an image in Tiny MCE, and changes its size, it generates the following line: </p>

<pre><code>&lt;img src="source/imagem.jpg?14641" alt="" width="550" height="838"&gt;
</code></pre>

<p>The result is a non responsive picture. How can I configure Tiny MCE to add the following inline css attributes on the image ?</p>

<pre><code>&lt;img src="source/imagem.jpg?14641" alt="" width="550" height="838" style="
    width: 100%; max-width: 550px; height: auto;"&gt;
</code></pre>