AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.6.0" />

.NET API 844,288 bytes

 CSSBackfaceVisibility

public sealed class CSSBackfaceVisibility : CSSProperty
Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/backface-visibility
public bool IsVisible { get; }

Gets if the back face is visible, allowing the front face to be displayed mirrored. Otherwise the back face is not visible, hiding the front face.