css download url curl or wget with user agent

wget -rHm http://example.com/example.css

http://webmasters.stackexchange.com/questions/2275/download-css-with-all-referenced-files

wget -rHm http://nogogo.cn --user-agent="Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"

http://osxdaily.com/2011/07/16/change-user-agent-with-curl/