title: retro-compatibility of HTML5 doctype?
body: <p>My magento project include both strict </p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt;
  </code></pre>
  
  <p>and transitional</p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  </code></pre>
  
  <p>doctype templates.</p>
  
  <p><br><br></p>
  
  <p>In an effort to harmonize this, I would be tempted to change it all to HTML5 doctype:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  </code></pre>
  
  <p><br><br></p>
  
  <p>Is it a good idea and what could be the possible consequence of it?<br><br></p>
  
  <p>Will my <code>a target</code> attributes still work for example?:</p>
  
  <pre><code>   &lt;a href="" target="_blank"&gt;&lt;/a&gt; 
  </code></pre>