New blank (MJML) theme

I made new blank theme (with MJML), becouse older blank theme with HTML works incorrectly.

If everything is good I will make other, more advance theme.

Thank you, it looks great in most email readers!
The only thing is, that it looks weird in Outlook 365, Outlook 2019 and Yahoo.
Here is a test:

I also made a blank MJML template … Only thing in it is just


And nothing else …