Mobile content doesn’t resize to screen

Hi,

I have built a website with Gutenberg Editor, and works great apart from a few issues. When opening the website on my phone, it has a horizontal scroll rather than resizing to the screensize. I have added most elements with variable sizes, so fonts should auto resize. Any suggestions how I can avoid the horizontal scroll?

Thanks

Makoto

The page I need help with: [log in to see the link]