Website design mockups are finished products that are to be used for delivery to developers for coding to finish a website design. These products can be produced with specific client requirements to align to existing website architecture and design.
They can also be developed to serve as the standard for the user experience where the development follows the finished visual design. Mockups are also produced in terms of the delivery of project specific design requirements for each visual asset required.
Mockups are by default produced using the industry standard in website presentations which is responsive design. Responsive design delivers a consistent design across desktop and mobile browsers and remains consistent across operating systems and technology platforms for web servers.