Today, I would like to share something I've discovered only recently (there is always something to learn!).
It's related to border radius and box shadows solutions for Internet Explorer 8 and previous versions. It might happen that the rendering of round corners and shadows is not working at all, and that every CSS rule applied is completely ignored to the point that the styled element won't even be displayed at all.
While the solution is very simple, the problem needs to be explained, and, please, read all the article if you're interested in the solution, because you really need to know what's happening.
Follow me.
A little bit of background
How did I discover the problem? It happened at work. In the company where I work, there's an intranet which I have developed. The main menu of the web app has round corners, rendered with a jQuery plug-in.A colleague, a few days ago, called me because the background colour, the round corners and the shadows on the intranet menu had disappeared. I immediately checked the browser configuration and security options, asking if he had changed something there. "I haven't", he replied.
We all know from experience that IE8 (the browser he's using) is not a great piece of technology and that it gives us a lot of troubles, but I immediately understand that the problem was not strictly related to the browser configuration. Any site using round corner was not working; even the CSS Pie homepage was not showing those wonderful round corners.
And so I started my quest.