AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.2.7" />

 CSSProperty

public sealed class CSSProperty : ICSSObject
Fore more information about CSS properties see http://www.w3.org/TR/CSS21/propidx.html.
public bool Important { get; set; }

Gets or sets if the !important flag has been set.

public string Name { get; }

Gets the name of the property.

public CSSValue Value { get; set; }

Gets or sets the value of the property.

public string ToCss()

Returns a CSS code representation of the property.