Don't forget, behind the scenes, the content you see on a website is not
miraculously staying in its own area.

There are special area's created for text (or graphics) to be inserted.
For the sake of simplicity let us just stick to how many columns do you prefer and
do you want borders?
This information (the structure or foundation) will
be placed on a master sheet which will then tell all your pages how to organize
the content text you want inserted.
Look at examples
So what is left? COLOR!!