It seems like a common sense idea: Designers and developers must work together.
But too often, these individuals work apart while working on the very same project. The designer works to create elements and color palettes and typography that looks great, while the developer codes and prepares the material for web publishing. And this can cause discord between the designer and web developer and in the final design itself.
If designers and developers work together on projects from start to finish, the result is a more cohesive web project with great aesthetics, user interface and clean code. There is less work and rework during the collaborative process, hopefully resulting in a project that can be completed in less time.