Developing my Final Website through Adobe Dreamweaver (Centralising My Site)

  
To centralise my Website i had to click in the 'CSS Style's' tab in Adobe
Dreamweaver, then i clicked on 'All' instead of 'Current'. I then selected #Table_01 
and it brings up the Properties as you can see in the 2nd screenshot. I had to click
'Add Property' then select 'Margin', after that i had to type the word 'auto' in the 'margin'
box then click on 'position' and change it to 'relative'.
Now the Website is Centrally Aligned.