File icons should be uniform in size
When using the File Library App, the left margin is not aligned because the icons in your image library are not uniform in width.
Example: The Excel and Word icons are 16 pixels wide, but the PDF icon is only 12px wide. That is causing the left margin on each filename to be out of alignment. Can you please fix the PDF icon in use so that it is 16px wide to match all the others? It should be in color anyway, since the Word and Excel icons are. Consistency is key in any web design. :)