logtail: set xx small font size

erp5/util/testnode/js-logtail/logtail.html

@@ -14,6 +14,6 @@
             <a href="logtail.html?noreverse">chronological</a> view.
             <a id="pause" href='#'>Pause</a>.
         </div>
-        <pre id="data">Loading...</pre>
+        <pre id="data" style="font-size: xx-small;">Loading...</pre>
     </body>
 </html>