I am trying to configure my popups with custom HTML/CSS using bootstrap. The main reason is to drive the pop-up style from the map attributes and to look cool. I have already written the HTML/CSS but when I add it to the popup in AGOL it strips the style and script tags. I am not familiar with Web AppBuilder (Developers Edition) or the anatomy of the apps but I know this type of customisation should occur here. Can anyone help? Is this possible? If so, where do I configure it?