If you make browser window larger and smaller, then these images will reposition to fit the window. Each of these images is 80 pixels wide and 56 pixels high.
Between the two lines of X's there is an image 1 pixel high by 600 pixels wide. So this pane will not shrink below 600 pixels.
PLEASE - do not add comments to this thread that force a particular browser width. Do a QuickQuote and copy this code to your own testing thread.