In our development process, we are crafting a widget designed to be seamlessly integrated into external websites. This integration involves the dynamic injection of a div element within the body of the page using Javascript.
While the widget appears satisfactory on pages with minimal or no style guidelines, we are encountering visual discrepancies due to conflicting style rules from the host page when it is heavily laden with CSS regulations that inadvertently supersede those of the widget. In simpler terms, the widget inherits styles from the host page if not explicitly set in its own stylesheet.
The seemingly straightforward solution would be to meticulously define every CSS rule for each element in the widget, including attributes like background color, across various states such as normal and focused. However, this brute force method proves laborious for a simple widget, signaling an inefficient approach.
Hence, my query pertains to the availability of a definitive mechanism to shield the widget's styles from interference by the host page effectively.
Consider this scenario: the host page features a CSS directive as follows:
div {
border-bottom: 1px solid green;
}
This particular rule imparts a green bottom border to all div elements on the page. Now, envision a circumstance where we overlook defining a border-bottom property in the widget's stylesheet. Consequently, all div elements acquire a green bottom border, highlighting the control predicament.
Although rectifying the absence of a border-bottom rule in the widget seems plausible, the core issue lies in the lack of jurisdiction over the host page's styles. Therefore, ensuring foolproof insulation necessitates the comprehensive definition of all style rules for every element within the widget, spanning all potential states—an arduous and error-prone endeavor.
While utilizing an iframe could circumvent these challenges, our preference leans towards avoiding this technique. Hence, let's exclude it from the deliberation.
Additionally, we acknowledge the option of employing !important in CSS rules to override preceding directives. Nonetheless, this tactic still mandates the exhaustive declaration of full CSS styles, mirroring the brute force strategy. Kindly refrain from incorporating this method in the discourse.
Your insights are greatly appreciated.