fix(NcModal): Some modal improvments #4645
Merged
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☑️ Resolves
display: noneThe buttons are placed absolute, therefor they do not interact with the modal container and content.
Meaning even if only on button is shown the modal is centered correctly.
The modal height is max. 90%, but if the window is not that tall or the modal is tall, then the header might overlap the content. So fix this by setting the modal max. height to 100% - 2*modal-header (because of the centered placement).
🖼️ Screenshots
You can see the header no longer overflows the content. And the button is on top of the modal content even if the default content margin of 50px is overridden.
And for the revert of the visibility hack, here is a "after" screenshot with only on button, you can see it is still centered perfectly:

🏁 Checklist