AngleSharp by Florian Rappl

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

.NET API 1,172,480 bytes

 CssBorderImageWidthProperty

More information available at: https://developer.mozilla.org/en-US/docs/Web/CSS/border-image-width
public Length WidthBottom { get; }

Gets the bottom length of the image slice. It can be an absolute or relative length. This length must not be negative. If a percentage of the image slice is given it is relative to the height of the border image area. The percentage must not be negative.

public Length WidthLeft { get; }

Gets the left length of the image slice. It can be an absolute or relative length. This length must not be negative. If a percentage of the image slice is given it is relative to the width of the border image area. The percentage must not be negative.

public Length WidthRight { get; }

Gets the right length of the image slice. It can be an absolute or relative length. This length must not be negative. If a percentage of the image slice is given it is relative to the width of the border image area. The percentage must not be negative.

public Length WidthTop { get; }

Gets the top length of the image slice. It can be an absolute or relative length. This length must not be negative. If a percentage of the image slice is given it is relative to the height of the border image area. The percentage must not be negative.