Amazon Web Services Frontend Engineer interview questions

Phone screen round : Interviewer asked me two scenario based questions 1. How do you check a functionality is working on all browser. 2. How do you handle error during production Then he asked me Frontend questions like : 1. Write css to place a div in center🙂 2. What value can we set for display property in css 3. Write a Java script program to check two array are deep equal such that array can contain object, null, undefined. 4. Create a star rating component using your tech stack, or plain html/css/javascript