This is a valid HTML4 page that demonstrates all viewable HTML4 Strict Tags. Not explicitly shown here are implicit or top level tags (such as html, head, body), and tags without viewable content (e.g. head, meta, style, script, base, br). Every top level table cell in the table tests a specific element, and you should see the name of that element in green. Any red (other than just this little bit, or perhaps in a missing image/object icon), or empty table cells indicates failure in your browser's HTML4 support.