Cross Browser Compatibility:We all know the importance of checking our web pages with multiple browsers, especially when we are designing a new layout for a website.The number of extant browsers we need to check with are enormous: Internet Explorer (IE)9,8, 7, 6, 5.5 and 5.0, Firefox 4,3,2.0 and 1.5, Opera 10, 9 and 8, and so on. And then there are the different platforms: Windows, Macintosh (Mac), Linux, etc. Cross...