Reusable Page Layouts
Pages of the same type should look consistent. Detail pages for different object types — customers, orders, products — should share a consistent structure even when the content differs. Dashboard pages should follow a consistent layout convention. List pages should have the same structural pattern regardless of what records they display.
Without reusable layouts, achieving this consistency requires building each page to the same specification manually — and maintaining consistency through discipline as pages evolve separately.
Reusable layouts make consistency structural rather than disciplinary.
Define the Structure Once
A reusable layout defines the page structure: where the header goes, where the main content area sits, how many columns, what the sidebar contains, how the action buttons are arranged.
The layout doesn't specify the content — it specifies where the content goes. It's a container template, not a content template.
Apply to Multiple Pages
When building a new page, select a layout from the layout library rather than starting from an empty canvas. The page structure is immediately in place; you focus on placing the right components into the right areas.
All detail pages that use the same layout share the same structural foundation. The header always has the same format. The sidebar always has the same width. The action buttons always sit in the same position.
Changes Propagate
When the layout changes — a new section added to the sidebar, a different approach to the header, a reorganized button placement — every page using that layout reflects the change.
This is the core benefit: updating one layout updates all pages that share it. Compare this to the alternative: updating each page individually, hoping not to miss any, accepting that pages will gradually diverge from each other as each receives slightly different updates over time.
Layout-based consistency is maintained automatically rather than by convention.
Override Where Needed
Reusable layouts are starting points, not rigid constraints. Any area of the layout can be overridden on a specific page. A detail page that needs an extra panel in its sidebar can add it without abandoning the base layout.
Overrides apply to the specific page only — the base layout is unchanged, and other pages using it aren't affected. The override is visible in the page settings, making it clear that this page differs from the layout default.
Building a Design System
Reusable layouts, combined with reusable components, form the foundation of a design system for your apps. Consistent structure, consistent components, consistent behavior — the visual and interaction language of your application is defined once and applied everywhere.