title: can I add <span> inside <textarea> and make it useful?
body: <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
      &lt;style&gt;
          span {
              color: red;
          }
      &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
          &lt;textarea readonly cols=200 rows=40&gt;
              &lt;span&gt;
                  hahahahaha
              &lt;/span&gt;
          &lt;/textarea&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>in this example，is there anyway I can make the text in <code>&lt;span&gt;</code> to be red in color
  or can it be done by some other html tag like <code>&lt;textarea&gt;</code>?</p>