Nginx is not being served on EC2 instance Public IP

I have installed nginx on ec2 instance and added in bound security rules for port 80, 22 and 443 but when I try to browse the public IP I got "This site can’t be reached" error but curl localhost is giving response in terminal. I have tried to change the region from US East (N. Virginia) to Asia Pacific (Mumbai) as well but it didn't help me out. I have registered in aws for the very first time and using free tier. Looking forward for the help. Thank you