The HTML that the web-designer coded is valid HTML 4.01. The CSS is also valid. However, if you check either of these and receive an
error, odds are it is because Geocities, the web host for this site, adds extra HTML/CSS/JavaScript/Who-Knows-What to the bottom of every
page. What they add is most likely not valid HTML/CSS and thus causes the page to validate improperly. Looking at the last few lines of the
actual HTML, you should be able to decipher what part was added in by Geocities. Removing this code chunk and checking the rest of the HTML
will give you valid HTML/CSS.