Why plain HTML components still matter

A downloadable component should be understandable before it is clever.

Plain files create a clean handoff point for prototypes, marketing sites, CMS themes, and application shells.

The best components still make accessibility and responsive behavior part of the default, not an optional cleanup pass.

A practical test

Open the standalone export, disconnect the network, and use the component with a keyboard. If the core experience breaks, the preview was hiding a dependency.