I need to remove padding and margins in the full-width template

Hi,

I have searched for some help in the already published topics but to no avail.

I have a site for which I created a Ribosome child theme (I mean, of course, the lite version thereof). I want to know whether is it possible to remove the padding and margins in the full-width page template in order to assign them myself through the Beaver Builder editor that I use for the layout of my site. If it is possible, I would like to know how to do it (though I am almost absolute beginner with only a few notions of html and css). Also, if such thing is not possible to do with the whole body of the full-width page, I would like to know whether is it at least possible to remove the padding and the sides and top margins in my site home page in order for the image I use on it to fit in the sides bordering the background and the top bordering the menu bar, leaving no white space in within the image and the box borders.

Please, forgive my poor English. I am a Spanish native speaker.

I look forward to an answer, for which I am grateful in advance.