title: responsive radio button in CSS
body: <p>I want to built a simple quiz in CSS without using javascript, I have written this code but please tell how can I apply action listener on radio button without using javascript? like if correct option is selected then a message "Correct" should be printed.</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
   &lt;head&gt;
    &lt;title&gt;Quiz&lt;/title&gt;
   &lt;/head&gt;
   &lt;body&gt;
    &lt;h3&gt;Capital of USA is?&lt;/h3&gt;
    &lt;input type="radio" value="opt1" name="capital"&gt;New York&lt;br&gt;
    &lt;input type="radio" value="opt2" name="capital"&gt;Washington&lt;br&gt;
   &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>