When the user’s screen is larger than 1600px, by default we display a border for the website, you may or may not like this design, so we allow you to easily turn this feature on or off, it’s up to you.
Site Wrap Option

Site Wrap Enabled

Site Wrap Disabled

Note: If you can’t see the Site Wrap effect when the Customizer panel is open, you can use the Ctrl +/-
shortcut to zoom the browser. Then you can see it.