Add block patterns
Block patterns are pre-designed groups of blocks. To add one, select the Add Block button [+] in the toolbar at the top of the editor. Switch to the Patterns tab underneath the search bar, and choose a pattern.
Frame your images
Twenty Twenty-One includes stylish borders for your content. With an Image block selected, open the „Styles“ panel within the Editor sidebar. Select the „Frame“ block style to activate it.
Twenty Twenty-One also includes an overlap style for column blocks. With a Columns block selected, open the „Styles“ panel within the Editor sidebar. Choose the „Overlap“ block style to try it out.
Read the Theme Documentation
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