I'd like to open a website that I can easily generate an ETH address like this website: http://taschh.com/microworkers/cv/generate/ Of course, I will have all of ETH address and its private key. I don't know how to do that. I have a normal website. Please help me Thank you so much.
You should read this chapter from "Mastering Ethereum" about Keys and Addresses:
Then look at some other answers on Stack Exchange: