GitHub網頁無法打開
今天訪問了一天GitHub沒進去，試了很多方法都不管用，最終找到了下面這種方法可以解決網頁無法訪問的問題。
操作如下：
1.打開此路徑：C:\Windows\System32\drivers\etc
2.將該路徑下的hosts文件複製到桌面，用記事本打開
3.將下列代碼複製到文本的最下方並保存
#github
192.30.253.112 github.com
74.125.237.1 dl-ssl.google.com
173.194.127.200 groups.google.com
192.30.252.131 github.com
185.31.16.185 github.global.ssl.fastly.net
74.125.128.95 ajax.googleapis.com
204.232.175.78 documentcloud.github.com
207.97.227.239 github.com
204.232.175.94 gist.github.com
107.21.116.220 help.github.com
207.97.227.252 nodeload.github.com
199.27.76.130 raw.github.com
107.22.3.110 status.github.com
204.232.175.78 training.github.com
207.97.227.243 www.github.com
192.30.253.118 gist.github.com
192.30.253.119 gist.github.com
199.232.28.133 assets-cdn.github.com
199.232.28.133 raw.githubusercontent.com
199.232.28.133 gist.githubusercontent.com
199.232.28.133 cloud.githubusercontent.com
199.232.28.133 camo.githubusercontent.com
199.232.28.133 avatars0.githubusercontent.com
199.232.28.133 avatars1.githubusercontent.com
199.232.28.133 avatars2.githubusercontent.com
199.232.28.133 avatars3.githubusercontent.com
199.232.28.133 avatars4.githubusercontent.com
199.232.28.133 avatars5.githubusercontent.com
199.232.28.133 avatars6.githubusercontent.com
199.232.28.133 avatars7.githubusercontent.com
199.232.28.133 avatars8.githubusercontent.com
192.30.253.112 github.com
192.30.253.119 gist.github.com
151.101.184.133 assets-cdn.github.com
151.101.184.133 raw.githubusercontent.com
151.101.184.133 gist.githubusercontent.com
151.101.184.133 cloud.githubusercontent.com
151.101.184.133 camo.githubusercontent.com
151.101.184.133 avatars0.githubusercontent.com
151.101.184.133 avatars1.githubusercontent.com
151.101.184.133 avatars2.githubusercontent.com
151.101.184.133 avatars3.githubusercontent.com
151.101.184.133 avatars4.githubusercontent.com
151.101.184.133 avatars5.githubusercontent.com
151.101.184.133 avatars6.githubusercontent.com
151.101.184.133 avatars7.githubusercontent.com
151.101.184.133 avatars8.githubusercontent.com
4.將該文件複製到：C:\Windows\System32\drivers\etc，選擇替換
5.刷新DNS：按下“Windows+R”鍵，進入命令提示符界面，輸入“ipconfig /flushdns”，按“Enter”鍵，提示刷新成功。
再次打開瀏覽器就可以訪問GitHub網站了。