In each of the 4 step components, replace the bare `` tag with a styled version matching the established pattern from App.tsx:
1. BackendSelectionStep.tsx line 65: Change `Step 1: Select Backend
` to `Step 1: Select Backend
`. Note: use mb-2 (not mb-4) because the `
` description paragraph immediately follows with its own mt-1.
2. RemoteConfigStep.tsx line 65: Change `
Step 2: Configure {backendLabel[backendType]}
` to `Step 2: Configure {backendLabel[backendType]}
`.
3. DeploymentStep.tsx line 24: Change `Step 3: Deployment Options
` to `Step 3: Deployment Options
`.
4. ReviewStep.tsx line 75: Change `Step 4: Review & Download
` to `Step 4: Review & Download
`.
These are className-only additions. Do not change element structure, content, or any other attributes. Tests use getByRole('heading') which is unaffected by className changes.