Hallo,
ich kommt einfach nicht weiter, von ca 600 Fehlern bin ich runter auf 2 (wc3 Validator)
Line 144, Column 4: end tag for "ul" which is not finished .
</ul>
Most likely, you nested tags and closed them in the wrong order. For example <p><em>...</p> is not acceptable, as <em> must be...