the issue is with the really long word in the H1 title, it doesn’t break to a new line so it overflows the container.
Couple of options:
1. Edit the page and select the H1 Headline – in the settings sidebar change to mobile and edit the Typography and set the font to a smaller size to stop the text overflowing. Setting it to 30px would fix it.
2. Add this CSS to force that word to break to a new line: