Both posts and pages can use templates. They are access on the right sidebar within a page editor. They set the width and sometimes include specific navigation or wayfinding elements.
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Default Template
The Default template sets the page content width at 776px wide which is the narrow layout.
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Wide Template
To select a Wide Template (1176px), you must select the Wide Template on the right sidebar in Page Settings
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This will set your Page Title to 1176px width, however the content will stay at 776px width.
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To remedy this, you will need to nest all your blocks in a Group Block and set the Align to Wide.
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You’ll also need to untoggle the Inner blocks use content width in the Group Block Settings
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Click Update and your content should fit within the Template Width.
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Landing Template
A landing page is a wide-width page that removes the title and breadcrumb to allow for a more flexible, visual layout.
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Sidebar Templates
Sidebar pages use a narrow width for the main content but adds a submenu on either the left or right side that results in a wide-width page (as is used on this current page).