L3 - Default Description
AT:
- if the generic modal grows vertically (e.g. in the variable filter) it will possible to scroll it as soon as it exceeds the window size
- the scroll bar should not be placed within the modal, but on the right edge of the window like you would scroll a normal page
- the background of the modal should not scroll as well
Hint:
It is okay to hide the footer, when the modal is open.