Before consumers sat in front of mobile devices for hours every day, there were numerous browsers and operating systems web designers had to contend with. So, it’s not like the concept of cross-browser testing is new. Because web browsers don’t always render websites the same way or process data in the manner originally intended, cross-browser testing has long been an important part of web design and development. It’s the only way to ensure that what’s built behind the scenes is properly implemented on the frontend of a website.

https://www.smashingmagazine.com/2020/02/cross-browser-testing-efficient-lambdatest/