How do you style file input elements?

[netshet]

Remember that very few people apart from you will ever look at your site in multiple browsers (unless it doesn't work in the first one they try), so getting the site to look exactly the same in all of them is not necessary - what matters is that it looks right, particularly given the base browser interface, and that can accommodate differently styled form controls.

As Robert said, it's very difficult to get all form controls to look the same across all browsers – you're better off not trying, because all that's likely to happen is that you'll mess some of them up!