The example in the Playground can't be scrolled

[LidiyaGeorgieva]

Issue Description

No scrolling of the sample possible (the whole page is scrolled and the third notifications group is not fully visible)

Issue Type

• Documentation is unclear
• Documentation is incorrect
• Documentation is missing
• Other

Steps to reproduce:

1. Open https://sap.github.io/ui5-webcomponents/nightly/components/fiori/NotificationList/#notification-list-with-group-items
2. Click on "Open in Playground" button
3. Expand the two collapsed groups
4. Issue: no scrolling of the sample possible (the whole page is scrolled and the third notifications group is not fully visible)
   

[nnaydenow]

Since the sample's height is dynamically we can't guarantee what to be used. You can set some harcoded height to the body element inside the sample

[dimovpetar]

Hello @SAP/ui5-webcomponents-topic-core ,

I have opened #9475 to set fixed height of the sample.
However, I would like to use 100% height to the body and the html elements, which currently doesn't improve anything, because the iframe has only 150px height. Why 100% height is not the default for all of the samples?

Best regards,
Petar