CSS-Only Chat
If the only requirement is &quot;using no JavaScript&quot;, you know that you don&#x27;t need CSS either, right? Dark web chatrooms just use frames — one frame to render the chat transcript (using a forever-loading &quot;Transfer-Encoding: chunked&quot; HTML page); the other with a plain old &lt;form&gt; with an &lt;input type=&quot;text&quot;&gt; and a &lt;submit&gt;.