One of the great things about the Web is that it’s cross platform. You can use your favorite system to browse the Web, be it Windows, Mac OS X or Linux. Some of these systems, namely Mac OS X, sometimes try a little too hard to control the user experience, and so you’ll find that things like buttons, drop down boxes and input fields look fairly different to those on other systems — even more so with the blue glow effect you get around input fields. This glow effect can cause problems if your input field is using custom images and CSS formatting.