How to implement a code on PHP Chinese website?

Question

Hello, masters, I am a novice who has just started learning Html. I saw a very beautiful and beautiful code on the PHP Chinese website. How did I implement it?

Me I have been struggling for a long time, including looking at the source code, but I don’t know how to do it. I hope someone can post the code and help me fulfill this wish. The specific link is: http://www.php.cn/html/html-tutorial.html When you click Run, a beautiful page will pop up, which can be previewed and edited online.

Answer 1

Right click - View source code

Didn’t you see it?

But I am also a novice and can’t understand it

Answer 2

This is a script executed by JS plug-in + PHP code. If you are a novice, you don’t need to study these