Thanks for infos get’s a bit more clear.
Yet I have an issue.
I have 2 stacked panels that are set for tablet and mobile to be 50VH height.
But on my iPhone 6S the bottom panel falls out of the viewport and the page gets a scroll.
If I scroll to reach bottom of content, then the Ui addressbar minimize and page looks like it should be.
Is there a way to always have the content split in 2 equal parts, no matter the UI browser bars?