Spacing

Margin and padding, the space around a block and inside it.

Spacing is the room around a block and inside it.

Margin is the space outside the block, between it and its neighbours.
Padding is the space inside, between the block's edge and its content.

Each is set per side, top, right, bottom, and left, and you can link the sides to change them together or split them to set each on its own. Both work per breakpoint.

Size

Width, height, their limits, and aspect ratio.

Typography

Type controls on a block: font, size, weight, spacing, and colour.