# HppPanelDefinition

A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.

Describes the placement of a single panel on the Hosted Payment Page public form:
which panel, in what order, and how wide on `md+` breakpoints.

## Fields
- `panelKey` (string): The panel this definition positions. Use a constant from `HppPanelKeys`. (nullable)
- `sortOrder` (integer(int32)): Relative render order, ascending. Ties break on the order the definitions appear  in the collection.
- `columnSpan` (integer(int32)): Bootstrap 5 column span applied at the `md` breakpoint and up (1 to 12). On smaller  viewports every panel is full width (`col-12`). Values outside 1 to 12 are clamped  by the renderer.

## See also

- [All documentation](https://devportal.demo.winkpg.io/llms.txt): the machine-readable index of every public page on this site.