设置wpf / caliburn.micro应用程序的大小，同时允许内容使用主窗口调整大小。

I can't figure out how to control the size of my application while allowing the content to resize with the main window. It is an WPF app and I am using Caliburn Micro (ViewModel first) and all my views are UserControls. I can't figure out how to control the size of m