Embodiments of the present invention provide tools and methods for the development and specification of a responsive graphical design. A graphical design environment allows a user to specify a design. The graphical design environment has a window for displaying a rendering of the design. A dimension specification interface allows the user to specify a dimension specification. A widget interface allows a user to add a widget to the design and specify a first state and a second state for the widget. An export interface allows a user to export the design from the tool to produce an exported design. The exported design utilizes an object model event to adjust a state of the widget from a first state to a second state.