title: enforcing only one required selection in radio box in html5
body: <p>Dear Community I have the following code. How I can enforce the user only pick one but not both and make it a required field ??</p>
  
  <pre><code>&lt;input type="radio" name="genderM" value="Male" &gt;Male
  &lt;input type="radio" name="genderF" value="Female"&gt;Female &lt;br&gt; &lt;br&gt;
  </code></pre>