What could be the problem?

Question

I've decided to download a couple of other people's code and re- do them,but most of the time my Notepad++ & Chrome don't give me 100℅ of the original result?
What could be the problem?

Answer 1

Good Question : While copying someone else's code their might be difference of
operating system
chrome browse version
and
resolution.
While doing something like this always create a new document and start adding code with small small sections which makes you understand the reason behind the logic.