Layer properties - Tweaked step sizes for draggable float

UI - Tweak selection rectangle design

src/Artemis.UI/Screens/SurfaceEditor/SurfaceEditorView.axaml

@@ -103,7 +103,9 @@
                                                InputElement="{Binding #ZoomBorder}"
                                                SelectionUpdated="SelectionRectangle_OnSelectionUpdated"
                                                BorderBrush="{DynamicResource SystemAccentColor}"
-                                               BorderRadius="8">
+                                               BorderRadius="8"
+                                               BorderThickness="1"
+                                               ZoomRatio="{Binding $parent[ZoomBorder].ZoomX}">
                         <shared:SelectionRectangle.Background>
                             <SolidColorBrush Color="{DynamicResource SystemAccentColorLight1}" Opacity="0.2" />
                         </shared:SelectionRectangle.Background>

src/Artemis.UI/Screens/SurfaceEditor/SurfaceEditorView.axaml.cs

@@ -47,7 +47,6 @@ public class SurfaceEditorView : ReactiveUserControl<SurfaceEditorViewModel>
     private void ZoomBorder_OnZoomChanged(object sender, ZoomChangedEventArgs e)
     {
         UpdateZoomBorderBackground();
-        _selectionRectangle.BorderThickness = 1 / _zoomBorder.ZoomX;
         _surfaceBounds.BorderThickness = new Thickness(2 / _zoomBorder.ZoomX);
     }