# Structure

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Learn how the Flexi Theme Library structure works in Shopify. Every Flexi section follows a four-tiered structure:

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#### Sections

The top-level container that defines a reusable component, like a hero banner or product slider. Sections can be dropped into any Shopify theme.
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#### Layouts

Each section contains one or more layout options—these control the structure, such as a single-column, grid, or split layout.
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#### Groups

Groups organize related content or functionality within a layout. They let you bundle settings or blocks together (e.g., “Card”, “Image Background”) for clearer content management.
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#### Blocks

The most granular unit in Flexi. Blocks are individual content elements—like headings, images, buttons—that can be mixed and matched inside groups.
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