Checking the Easy Stuff: General
While the difference you see between browsers might be due to some obscure browser bug or some new technique you’re using, often it’s just something simple. Everyone from novices to experts makes the occasional simple mistake that trips them up. For instance, it’s easy to think the source of a problem is in the code and spend a lot of time debugging it, only to find that you’re changing one file but uploading and viewing a different one from your server!
Many of the following suggestions apply to testing your site from the site’s URL on your server.
To check the general easy stuff
• Validate your code as described in “Validating Your Code.” This is a great place to start, because you can eliminate coding syntax ...