404 cloud template full page

Hello,
I just discovered the beauties of your cloud templates, there is one that fits my needs better than the default one but I cannot set it up as the demo. The one I choose is “404 template 11” and I would like to have it full screen, the image covering from left to right and no header and footer.
Inspecting the css so far I managed to hide the header adding this css code to the child-theme css stylesheet:

.error404 .td-header-wrap {
display: none;
}

Thanks.

Of course! Since the theme options are so many I thought there was something I missed.
By the way, the cloud pages are a very good idea!