Remove WP post editor border

How do I get rid of the weird border that appears on the post edit screen and make my content full width? I don’t like how this looks and would like to get rid of it. It’s definitely something caused by this theme.

Thanks

edit: NVM, I’ve figured it out. There’s some css in includes/less_files/editor-style.less that causes this. I guess it’s supposed to be a feature but I don’t like it. I’m only using the default post type anyway, so it’s unnecessary. Hope this helps someone.

• This topic was modified 11 years by annikabee. Reason: fixed it myself

I agree, I find this annoying, even though I do get that it’s a “feature” … would love a on click ON/OFF for this feature myself.