Here is a list of the HTML tags allowed in articles and other content on LDraw.org.
<!--> <a> <b> <blockquote>
<br>
<center>
<code>
<div>
<dl>
<dd>
<dt>
<em>
<hr>
<i>
<img>
<li>
<ol>
<p>
<pre>
<span>
<strong>
<table>
<td>
<th>
<tr>
<tt>
<u>
<ul>
Please try and use embedded style statements to position content instead of tables. This will allow paragraphs to shift in order to accomodate smaller screen sizes