Page templates set whether a page shows a sidebar, a title and constrained content. Choose one in the page settings. In the block editor, open the Page tab of the settings sidebar and use the Template setting. In the Classic Editor, use Template in the Page Attributes box.
Templates
Default
Shows the page title and the sidebar. The sidebar shows only when the Sidebar widget area has widgets. Without widgets, the content is centered in a column about 71% of the site width.
Default Template – No Title
Works like Default and hides the page title.
Full Width Page
Hides the sidebar. The content is centered in a column about 71% of the site width. Shows the page title.
Full Width Page – No Title
Works like Full Width Page and hides the page title.
Full Width Page – Unconstrained Content
Hides the sidebar. The content uses 100% of the site width. Shows the page title.
Full Width Page – Unconstrained Content – No Title
Works like the template above and hides the page title. Page Builder sets this template on a custom home page.