AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.1" />

.NET API 1,172,480 bytes

CssPaddingTopProperty

sealed class CssPaddingTopProperty : CssPaddingPartProperty, ICssPaddingTopProperty, ICssProperty

Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/padding-top

public Length Top { get; }