AngleSharp by Florian Rappl

<PackageReference Include="AngleSharp" Version="0.8.0" />

.NET API 1,171,968 bytes

CssBorderBottomLeftRadiusProperty

sealed class CssBorderBottomLeftRadiusProperty : CssBorderRadiusPartProperty, ICssBorderBottomLeftRadiusProperty, ICssProperty

Information can be found on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-left-radius

public Length HorizontalBottomLeft { get; }

public Length VerticalBottomLeft { get; }