AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.3" />

.NET API 1,189,376 bytes

 CssBackfaceVisibilityProperty

Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/backface-visibility 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.
using AngleSharp.Css; using AngleSharp.Extensions; namespace AngleSharp.Dom.Css { internal sealed class CssBackfaceVisibilityProperty : CssProperty { internal CssBackfaceVisibilityProperty(CssStyleDeclaration rule) : base(PropertyNames.BackfaceVisibility, rule, PropertyFlags.None) { } protected override object GetDefault(IElement element) { return true; } protected override object Compute(IElement element) { return Converters.BackfaceVisibilityConverter.Convert(base.Value); } protected override bool IsValid(ICssValue value) { return Converters.BackfaceVisibilityConverter.Validate(value); } } }