Hi Christian
Thank you for your reply. So I removed the p tag wrapping the headline “News” in the English version as you advised and added the inline style in the Custom Headline shortcode instead. It looks like this now:
[custom_headline style="text-align:center" level="h2" looks_like="h3"]
News
[/custom_headline]
Hope, the syntax is correct like this? I compared it to the button syntax suggested by you.
But on mobile, the button still “sticks” to the slider element below without any margin at the bottom, here is a screenshot from my iPhone:

Also, like you can see on the screenshot, there is a “scroll-to-top” anchor button showing at the bottom of the page. This is strange, because I deactivated that button a few days ago and it should not be there
(it is not showing in the German version, though, our main language). To me, it seems like there is some conflict with the translations. Would you mind taking another look at it? Thank you, I really appreciate your efforts.
Best Regards,
lypa