AngleSharp by Florian Rappl

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

.NET API 1,171,968 bytes

 CssColumnFillProperty

More information available at: https://developer.mozilla.org/en-US/docs/Web/CSS/column-fill
using AngleSharp.Css; namespace AngleSharp.Dom.Css { internal sealed class CssColumnFillProperty : CssProperty, ICssColumnFillProperty, ICssProperty { internal static readonly bool Default = true; internal static readonly IValueConverter<bool> Converter = Converters.Toggle(Keywords.Balance, Keywords.Auto); private bool _balanced; public bool IsBalanced => _balanced; internal CssColumnFillProperty(CssStyleDeclaration rule) : base(PropertyNames.ColumnFill, rule, PropertyFlags.None) { Reset(); } public void SetBalanced(bool balanced) { _balanced = balanced; } internal override void Reset() { _balanced = Default; } protected override bool IsValid(ICssValue value) { return Converter.TryConvert(value, SetBalanced); } } }