It would be a better learning experience for you if you started with a blank canvas and wrote all your own code. The example is just one way the page should look. It doesn’t have to be, and shouldn’t be, an exact copy.
Thank you for quick respons. It solved my problem.
I just took the content of the page, all the styling I made myself. I didn’t think that having my own content of the page is important, rather styling of it and learning all the html stuff. But thanks for your criticism and I will try to do more on the html side onward.