Image-free CSS Tooltip Pointers - A Use for Polygonal CSS? | Filament Group, Inc.Image-free CSS Tooltip Pointers - A Use for Polygonal CSS? A while back, Tantek Celik released A Study of Regular Polygons, which used a little-known CSS trick to create non-rectangular shapes such as triangles and pentagons with nothing more than an ordinary HTML element. The experiment is very interesting and really cool, but the practical takeaway wasn’t immediately clear. Recently however, we’
