And they did fix that for the JS applications (WinJS and the like) by using and implementing their own idea, the "grid", which no one else supports to this day,

And they did fix that for the JS applications (WinJS and the like) by using and implementing their own idea, the "grid", which no one else supports to this day, but in a lot of ways is based on the ideas of UI design from XAML/WPF.