Improve AbstractFcAppRouterLayout styles

Author: javier-godoy

src/main/java/com/flowingcode/addons/applayout/AbstractFcAppRouterLayout.java

@@ -40,11 +40,13 @@ public abstract class AbstractFcAppRouterLayout extends Div implements RouterLay
 	private AppLayout app;
 
 	public AbstractFcAppRouterLayout() {
-		setSizeFull();
+		getElement().getStyle().set("width", "100%");
+		getElement().getStyle().set("height", "100vh");
 		getElement().getStyle().set("display", "flex");
 		getElement().getStyle().set("flex-direction", "column");
 		app = new AppLayout("");
 		app.setHeight("32px");
+		app.getElement().getStyle().set("flex-shrink", "0");
 		app.addClassName("compact");
 		app.setFixed(true);
 		app.setSwipeOpen(false);