The <div> tag has been the principle tool used to put pages together.
Pages have parts – sections that serve particular functions – and as a rule those parts have been set with <div> tags. On the top of most pages is a header. Likewise most pages have a nav div and on the bottom a footer. These are divs that tend stay the same throughout a website. Then there are divs (or a div) with content that is unique to each page.

Before started to build my site, I thought I’d take a look into consider where the div’s would be in my layout. Each element inside the div’s then are placed using padding, margins etc.