Error Line 236 column 7: end tag for "thead" which is not finished

كود:
</thead>
Most likely, You nested tags and closed them in the wrong order. For example <p><em>...</p> is not acceptable, as <em> must be closed before <p>. Acceptable nesting is: <p><em>...</em></p>

Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, <head> generally requires a <title>, lists (ul, ol, dl) require list items (li, or dt, dd), and so on.

Error Line 1075 column 4: end tag for "div" omitted, but OMITTAG NO was specified

كود:
</td>
You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".

Info Line 1067 column 0: start tag was here.

كود:
<div class="smallfont">
Error Line 1156 column 7: end tag for element "div" which is not open

كود:
</div>
The Validator found an end tag for the above element, but that element is not currently open. This is often caused by a leftover end tag from an element that was removed during editing, or by an implicitly closed element (if you have an error related to an element being used where it is not allowed, this is almost certainly the case). In the latter case this error will disappear as soon as you fix the original problem.

If this error occured in a script section of your document, you should probably read this FAQ entry.

Error Line 1157 column 6: end tag for element "div" which is not open

كود:
</div>

Error Line 1158 column 5: end tag for element "div" which is not open

كود:
</div>

Error Line 1208 column 6: end tag for element "div" which is not open

كود:
</div>

Error Line 1210 column 5: end tag for element "div" which is not open

كود:
</div>

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