The Border block sets border width/style/color (uniform or per-side) and per-corner radius.
Where: Right sidebar → Styles → Border — Select an element and add/open Border
Key ideas
- Border: Width, style (solid/dashed/dotted/…), and color — link all sides or set each.
- Radius: Round all corners together or per-corner.
Steps
- Open Styles → Border.
- Set width, style, and color.
- Unlink to style individual sides.
- Set border-radius (all or per-corner).