Userland+LibGUI: Add shorthand versions of the Margins constructor

This allows for typing [8] instead of [8, 8, 8, 8] to specify the same
margin on all edges, for example. The constructors follow CSS' style of
specifying margins. The added constructors are:

- Margins(int all): Sets the same margin on all edges.
- Margins(int vertical, int horizontal): Sets the first argument to top
  and bottom margins, and the second argument to left and right margins.
- Margins(int top, int vertical, int bottom): Sets the first argument to
  the top margin, the second argument to the left and right margins,
  and the third argument to the bottom margin.

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp b/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
index 67094d6554..c0d1fbbb9d 100644
--- a/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
+++ b/Userland/Applications/PixelPaint/LayerPropertiesWidget.cpp
@@ -25,7 +25,7 @@ LayerPropertiesWidget::LayerPropertiesWidget()
     auto& group_box = add<GUI::GroupBox>("Layer properties");
     auto& layout = group_box.set_layout<GUI::VerticalBoxLayout>();
 
-    layout.set_margins({ 20, 10, 10, 10 });
+    layout.set_margins({ 20, 10, 10 });
 
     auto& name_container = group_box.add<GUI::Widget>();
     name_container.set_fixed_height(20);