Accepted answer

in firefox, you can simply right-click the page and do save as... to download the complete website including all referenced files.

i looked at the website you mention and the reason that this doesn't work for this website is because this website is not completely client-side. the javascript does server-requests, which won't work on a local copy, because of security reasons.

this results in the following error:

ns_error_dom_bad_uri: access to restricted uri denied
d3.js (row 1674): request.send(data == null ? null : data);

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