title: <img> tag cannot be nested in <a> tag
body: <p>what is the reason that <code>&lt;img&gt;</code> tag cannot be nested in <code>&lt;a&gt;</code> tag by HTML5 specifications</p>
  
  <pre><code>&lt;a href="#"&gt;
      &lt;img src="src" alt="alt"/&gt;
  &lt;/a&gt;
  </code></pre>
  
  <p>visual studio 2010 sp1 say that</p>
  
  <p><img src="https://i.stack.imgur.com/pHpNJ.png" alt="enter image description here"></p>