To create a website, there is the design and there is the development. There has been a lot of discussion about what things the two should do when it comes to making a website up and running.
Putting them together is like pouring oil to water. They are both liquid, but they won't merge as one.
Design is one thing, and it's one part of the equation; it's the one that makes a website look and feel. It's the visuals, the cues and the guidance of what should and could happen. The design of a website can be considered as the frontend part. It's relative but it's seen.