Side Navigation — Playground
Every M3 metric on ws_sidenav() is a CSS custom property. Drag the controls to retune both variants live, then copy the block at the bottom — that is the real override, not a mockup.
Expanded
App content
Rail
App content
Your overrides
Only the properties you changed appear. Drop this anywhere the rail is used — or hand it back and I will bake it into the component defaults.
/* Nothing changed yet — the component is at its M3 defaults. */