Modify main theme in the page specifies

Hello guys ,
I need to modify in a page specifies the css of my project. in the case would be '.CONTENT'
  how can I do this using OS?

Hi Gustavo,

If what you want to so is to change the .Content in your page just copy paste that block of css from the "project css" to the "screen css" and make the changes you need there.
The css in the screen will be applied on top of the others.

Also if you want to change the "background", make sure you keep the "!important" at the end, since important tags are used to prevent a style from being overriden.

João Rosado
Thanks for the help João, it worked perfectly here!