the front-end time to go out for the interview, because I wrote on my resume that I usually use the  flex  layout, and the interviewer asked me why I didn"t use the  grid  layout. At that time, I replied that it was because of compatibility, and then the interviewer asked me how different the compatibility of the two was. To be honest, I saw his compatibility in 17 years, when there were almost no browsers. 
 then I went back to check and found that the compatibility of  grid  is much better now, almost the same as  flex , so I would like to ask if I can use  grid  when I use  flex  for production. It seems that it is rare to use  grid  for layout nowadays. 
