@patternfly/react-core/src/layouts/Gallery/examples/gallery.css

This library provides a set of common React components for use with the PatternFly reference implementation.

.ws-react-l-gallery .pf-v5-l-gallery {
    padding: 1rem;
  }

.ws-react-l-gallery .pf-v5-l-gallery > div {
  padding: 1rem;
  border-width: 2px;
  border-style: dashed;
}