DOM Rendering Performance

The CSS contain property provides performance benefits by creating rendering boundaries that isolate elements from the rest of the page layout. Its benefits include: 1) Limiting the scope of layout recalculations to the contained element, 2) Preventing layout changes from affecting parent elements, 3) Enabling more efficient rendering optimizations by the browser, 4) Reducing the impact of style changes on the overall page layout. Common values include: - layout: Creates a new formatting context - paint: Clips overflow and creates a containing block - size: Element size doesn't depend on its children - content: Combines layout and paint containment