When testing a website, which browsers would you regularly test? * code example

Example 1: crow browser testing

Cross Browser Testing: When we do crossbrowser testing we
execute multiple test scripts on different browsers one by
one. When one test executed/completed another browser
would be invoked on the current browser.

Example 2: what is cross browser testing

browser code is changing constantly 
to test your products health on  the 
				latest browsers, OSs, 
a cross browser testing platform using
mobile emulators & simulators, and real devices is helpful
...unless you have a dedicated QA team of 20 - 30 people.