Like this spiral image which is made up of shapes of different sizes and colors to create a complex and beautiful image, a website is made up of different parts layered together to achieve your business goals.
Starting with the overall design and structure your website is based on a site map, navigation, header, footers, colors and fonts. Then add in all of the pages with images and content. Finally, implement the functionality of your site – anything from collecting emails for newsletters, to selling goods and services, to providing content for members only.