Remove/Hide main body from all pages

Hello i tried to remove the mainbody from my pages, as i saw in the forum, but i couldnt achieve it.

I pasted this in override.css
.nobody #mainContent{
display: none;
}

i enabled override in advanced option in template manager

and i pasted
.nobody
in Page Class of the menu item

but it didnt work

did i miss anything?

Hi,

It should work if you have done exactly like that. Can you provide me with backend access to check?

Thanks,