Define clean CSS style sheets and mantain clean coding

Most of the times digital mobility services and applications are developed by small groups of people, in some cases by a single person. It is important that all people involved in this process are fully aware of the W3G provisions. To ensure all users can correctly perceive the service features, CSS (Cascading Style Sheets) layout and style sheets shall be defined with an attentive care since it stores most of the information about user interface elements’. Ensure the application’s CSS sheet is compliant with the W3G provisions, especially concerning contrast, colour, size of textual and visual contents.

Digital mobility applications, similarly to webpages, are equipped with information about internal style rules. Such rules are generally (but not exclusively) coded into CSS, a language for describing the rendering of HTML and XML documents on screen, on paper, in speech, etc. It defines colour-related properties and values of texts, backgrounds, borders, and all other visible elements of each screen template or of a group of similar screens.