AngleSharp by Florian Rappl

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

.NET API 1,172,480 bytes

 CssBorderTopLeftRadiusProperty

Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/border-top-left-radius
using AngleSharp.Css; namespace AngleSharp.Dom.Css { internal sealed class CssBorderTopLeftRadiusProperty : CssBorderRadiusPartProperty, ICssBorderTopLeftRadiusProperty, ICssProperty { public Length HorizontalTopLeft => base.HorizontalRadius; public Length VerticalTopLeft => base.VerticalRadius; internal CssBorderTopLeftRadiusProperty(CssStyleDeclaration rule) : base(PropertyNames.BorderTopLeftRadius, rule) { } } }