If you click on Appearance, and then Customize you can remove Widgets and make edits to your theme.
I know, thanks, but my question was about what php/css should I edit and how, without messing the theme responsiveness.
Edit the page and go to the “Page Attributes” section(Available on right hand side of the page) and choose “Template” >> Full Width Page. Then the page will appear without any sidebar.
On PHP you just edit the php template and remove the code <?php get_sidebar(); ?> and fix the style accordingly.
In my theme (personal Portfolio) the Page Attribute: Template does not exist.
Is there another way to remover the sidebar and have full width content?
