A system comprises a first workstation that locally instantiates a design tool configured to allow a designer to specify a design for a web page. A data store is locally available to the first workstation, and receives and stores the design as a saved design. A second workstation provides access to a code editor to allow a programmer to specify a modification to an encoding of the design. A server means instantiates the code editor for the second workstation, saves the modification as a saved modification, and serves the encoding of the design in accordance with the modification by combining the saved modification with the saved design. The server means seamlessly combines the saved design and the saved modification such that the saved modification and the saved design can each be independently altered and recombined to produce a modified encoding of the design.