/// <summary>
        /// Recursively creates the rectangles of the blockBox, by bubbling from deep to outside of the boxes
        /// in the rectangle structure
        /// </summary>
        private static void BubbleRectangles(CssBox box, CssLineBox line)
        {
            if (box.Words.Count > 0)
            {
                double         x = Single.MaxValue, y = Single.MaxValue, r = Single.MinValue, b = Single.MinValue;
                List <CssRect> words = line.WordsOf(box);

                if (words.Count > 0)
                {
                    foreach (CssRect word in words)
                    {
                        // handle if line is wrapped for the first text element where parent has left margin\padding
                        var left = word.Left;

                        if (box == box.ParentBox.Boxes[0] && word == box.Words[0] && word == line.Words[0] && line != line.OwnerBox.LineBoxes[0] && !word.IsLineBreak)
                        {
                            left -= box.ParentBox.ActualMarginLeft + box.ParentBox.ActualBorderLeftWidth + box.ParentBox.ActualPaddingLeft;
                        }


                        x = Math.Min(x, left);
                        r = Math.Max(r, word.Right);
                        y = Math.Min(y, word.Top);
                        b = Math.Max(b, word.Bottom);
                    }
                    line.UpdateRectangle(box, x, y, r, b);
                }
            }
            else
            {
                foreach (CssBox b in box.Boxes)
                {
                    BubbleRectangles(b, line);
                }
            }
        }