That code is still not valid; you still have tags which belong only in the body mixed into the head section, and an extra opening
<p>REVENUE DATABASE MANAGEMENT SYSTEM</p>
I haven't looked any further than that.
Please check your code again, using the validator and correct any errors. https://validator.w3.org
You should also validate your CSS as several attributes are missing units. http://jigsaw.w3.org
Then post the corrected code here, following the formatting instructions given earlier in the thread.