diff --git a/TODO b/TODO
index 22f1803..24cfa94 100644
--- a/TODO
+++ b/TODO
@@ -59,7 +59,7 @@ to maintain focus until mouse release (fix scroll bars)
 [ ] Find a way to concile pixel measurements to the mm ones used in css, for example in min/max sizing
     of elements
 [ ] Center elements to div (center children_bounds to the center of the div bounds and shift the origin accordingly)
-[ ] Use containing_rect() in position_element() to skip some computing and semplify the function
+[x] Use containing_rect() in position_element() to skip some computing and semplify the function
 [ ] Rename position_element() to layout_element()
 [ ] Make functions to mark rows/columns as full, to fix the calculator demo
 
diff --git a/lib/ugui.c3l/src/ugui_layout.c3 b/lib/ugui.c3l/src/ugui_layout.c3
index 805b2c9..a81eb22 100644
--- a/lib/ugui.c3l/src/ugui_layout.c3
+++ b/lib/ugui.c3l/src/ugui_layout.c3
@@ -146,16 +146,7 @@ fn Rect Ctx.position_element(&ctx, Elem *parent, Rect rect, Style* style)
 	};
 
 	// 5. Update the parent's children bounds
-	if (!child_occupied.bottom_right().in_rect(div.children_bounds)) {
-		// right overflow
-		if (child_occupied.bottom_right().x > div.children_bounds.bottom_right().x) {
-			div.children_bounds.w += child_occupied.bottom_right().x - div.children_bounds.bottom_right().x;
-		}
-		// bottom overflow
-		if (child_occupied.bottom_right().y > div.children_bounds.bottom_right().y) {
-			div.children_bounds.h += child_occupied.bottom_right().y - div.children_bounds.bottom_right().y;
-		}
-	}
+	div.children_bounds = containing_rect(div.children_bounds, child_occupied);
 
 	// 99. return the placement
 	if (child_placement.collides(parent_view)) {