Ever wondered how this web pages are made? they are actually coded using HTML with the help of other codes such as php ,jquerry, java script and MySQL for database storage.

This coding are then uploaded to the site and that website ir ready to go.
It is against the law to copy a website that copyright is guarded.

Some sites are free to copy. IE if you want to copy a website to a new sever.
To make a copy of any site , i use HTTRACK a small software that downloads everything of a site ,it is efficient even though it takes time .