Cross Browser Websites
What does "cross browser" mean? In a nutshell, this term is used to refer to web content that will keep the same functionality and appearance across multiple internet browsers.
Why is this important? In the growing arena of software variety, there are many internet browsers that are widely used ( Firefox, Safari, Internet Explorer and even Opera ). The problem arises in the fact that these browsers use a different codebase to create the appearance of a web page. So in web language you may say "place this box 10 pixels below this box" and your results may vary when you open the page in different browsers. Sometimes this is caused by bugs in the browser itself, sometimes it is caused by the lack of respect for internet standards.
Regardless of the reason it is important to keep in mind that you need to test a web page in multiple browsers and use reliable methods and syntax when creating a web page.