Свойство columnBreakBefore
Возвращает значение "column-break-before"
Реализация
String get columnBreakBefore => getPropertyValue('column-break-before');
Устанавливает значение "column-break-before"
Реализация
set columnBreakBefore(String value) {
setProperty('column-break-before', value, '');
}
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-html/CssStyleDeclarationBase/columnBreakBefore.html