Our application is built on Theme Cosmos. Client is expecting in the main work area - the work object header, the lifecycle chevron and the page level errors should be static at the top and not scroll along with the work object details. As per our understanding, this would require CSS/script customization to achieve the desired functionality but wanted to know if there is any such extension in the Cosmos framework which would help for this use case.

So, trying to understand if any such implementation/customization is available across the product for extension?

Note: We did reach out to Pega support team and they confirmed no such extension is available as part of Cosmos framework and it is more constrained with Constellation as well for such a customization. We did explore the possibility of customization using CSS/Javascript but that would complicate any future upgrades to UI and hence, do not want to build a tight dependency on complex customizations.