AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.5" />

.NET API 1,113,600 bytes

 AnimationFillStyle

public enum AnimationFillStyle
An enumeration over all possible fill-mode values.
namespace AngleSharp.Dom.Css { public enum AnimationFillStyle : ushort { None, Forwards, Backwards, Both } }