title: Attribute value not allowed on element input at this point (on a form)
body: <p>W3C tells me "Attribute value not allowed on element input at this point". I thought this was necessary for forms?</p>
  
  <pre><code>&lt;input type="image" value="submit" class="no-border" src="assets/images/submit_btn.png" alt="submit" name="submit" /&gt; 
  </code></pre>