AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.1" />

.NET API 1,172,480 bytes

 CssBorderSpacingProperty

sealed class CssBorderSpacingProperty : CssProperty, ICssBorderSpacingProperty, ICssProperty
Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/border-spacing
public Length Horizontal { get; }

Gets the horizontal spacing between cells, that is the space between cells in adjacent columns.

public Length Vertical { get; }

Gets the vertical spacing between cells, that is the space between cells in adjacent rows.

public void SetSpacing(Length horizontal, Length vertical)