AngleSharp by Florian Rappl

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

.NET API 1,189,376 bytes

 CssShorthandProperty

Base class for all shorthand properties
public CssProperty[] Properties { get; }

public CssShorthandProperty(string name, CssStyleDeclaration rule, PropertyFlags flags = 0)

protected static bool ExpandPeriodic(CssValueList list)

protected static string SerializePeriodic(CssProperty t, CssProperty r, CssProperty b, CssProperty l)

protected static string SerializePeriodic(ICssValue top, ICssValue right, ICssValue bottom, ICssValue left)

protected static string SerializePeriodic(string top, string right, string bottom, string left)

protected TProperty Get<TProperty>()