Full screen Mode

I am new to Gradient. When I was testing yesterday, I was able to working in full screen mode as if I was running the Jupyter notebooks on my local machine. However, today when I opened the notebook, I find that valuable screen space is taken by huge margins.

For example, this is what my top looks like.

In short, now my work space is reduced by 35%. This is a true deal breaker.

Is there any way to get rid of the margins?

PS

Think I may have figured out. It seems if I click on “Open (V1 Classic)”, I get the usual Jupyter interface that takes up the full browser window.

I am not convinced, because yesterday I was definitely using V2 and it opened full screen.

Anyway, if V2 does not allow full screen, then please please please don’t take away V1.