In order to download a website all you need is the website address (URL, for eg. apple.com or google.com), an internet connection and WebsiteDownloader.io
All you need to do is enter the Website URL you want to download into WebsiteDownloader.io and after a couple of minutes, depending on the size of the website, you will get a zip that would contain the HTML source code of the website.
You can also preview the list of files that the zip would include so that you are fully assured of the contents of the ZIP.
The world now has over a one billion websites and the entire world population is 7.4 billion as of writing this article. This means, there is 1 website for every 7 people on the Earth. Although, it does not work exactly like that but it would not be wrong to make an estimation like this – 1 website for every 7 people!