title: Is it valid to use html form tag instead of Struts 2 s:form tag?
body: <p>I want to use</p>
  
  <pre><code>&lt;form action="someClass"&gt;
  &lt;s:textarea name="name" label="Name"/&gt;
  &lt;s:checkboxlist list="{'Male','Female'}" name="gender" label="Gender"/&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>instead of</p>
  
  <pre><code>&lt;s:form action="someClass"&gt;
  &lt;s:textarea name="name" label="Name"/&gt;
  &lt;s:checkboxlist list="{'Male','Female'}" name="gender" label="Gender"/&gt;
  &lt;/s:form&gt;
  </code></pre>
  
  <p>Because <code>&lt;s:form&gt;</code> tag's default theme "<code>xhtml"</code> is not ok with my CSS and theme "simple" can't show validation errors by itself without the use of <code>fielderror</code> tag.
  So is it valid to use it?
  I'm ok by using like that till now. Is there any error that I will face for using like that in the future?</p>