AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.0" />

.NET API 1,171,968 bytes

 CssBorderImageSliceProperty

sealed class CssBorderImageSliceProperty : CssProperty, ICssBorderImageSliceProperty, ICssProperty
More information available at: https://developer.mozilla.org/en-US/docs/Web/CSS/border-image-slice or even better: http://dev.w3.org/csswg/css-backgrounds/#border-image-slice
public bool IsFilled { get; }

Gets if the center patch should be filled.

public Length SliceBottom { get; }

Gets the position of the bottom slicing line.

public Length SliceLeft { get; }

Gets the position of the left slicing line.

public Length SliceRight { get; }

Gets the position of the right slicing line.

public Length SliceTop { get; }

Gets the position of the top slicing line.