full-width for pages (not posts)

The option is on the page edit screen ??

Full width as defined by theme is by way of using the full-width template from the dropdown page template option – this will not show the right sidebar.

Below the edit screen is a check box marked “Set page to true full width?” – use this in combination with the full-width template for a complete full width i.e. no sidebars at all. Works on per page basis.

The rest of the content width adjustments are global and are found in the Customizer section.

Regards,
Zulf