It is very important to keep in mind that the browser you use to access the web is not the same for everyone. There are many brands of browsers available on the web, some of which are more widely used than others, and just like the various operating systems available today…not all browsers function exactly the same way.
In some cases, your content may display the same in most major web browsers, but it doesn’t always work out so easily. From tables to layers, JavaScript to PHP…there are many things that can display differently to the user browsing your website based on the application they are using. This is why it is very important that, when creating a website (or page), you verify that the page functions correctly in all major browsers. When something does go astray, it isn’t always simple to fix…but it can be done. So always make sure that you check your work before you publish your work. It’s better that you catch the mistake before your customers do.
Examples of popular browsers: Internet Explorer, Firefox, Opera Browser, Google Chrome, Safari, and Netscape