AUTOMATIC DETECTION OF CSS CONFLICTS

A method, system, and/or computer program product automatically detects CSS conflicts. The method comprises: receiving at least one UI constraint and at least one first CSS rule defined by a developer of a widget as well as at least one second CSS rule customized by a user of the widget, the UI constraints being used to restrict the UI of the widget; running a page containing the widget; performing automatic validation on each UI constraint based on the result of running the page; and in response to deriving a UI constraint being violated from the validation, finding one or more of the second CSS rules that lead to violation of the UI constraint in a first set made up of the second CSS rules that override the first CSS rules.