Unticking gutter settings doesn't work? [SOLVED]

I have created a bloc and set the padding to “none”. I want to add two columns to fit the full screen but for some reason the ticking of the “gutter” settings isn’t working. Ticking or unticking doesn’t have any effect. I have included two screenshots to show what I mean. Can anybody else suggest what I might do to have the columns “full width” please. I have tried creating the setup on another page to no avail. I have shut down “Blocs” but that didn’t work, nor does a reboot of my MacBook Pro work either.

this is what I am trying to achieve

Thanking you in advance
Sabina

Hi @Mitaka

Select the Blocs in the left panel and then on the right panel you will get this width option. The right button makes it full width of the browser window.

Screen Shot 2020-12-07 at 1.40.26 PM

Brilliant. Thank you so much. I thought I was going mad.