GitHub圖片不顯示的解決辦法
首先把這些內容複製到hosts文件中，如下：
# GitHub Start
140.82.114.3 github.com
199.232.68.133 gist.github.com
199.232.68.133 assets-cdn.github.com
199.232.68.133 raw.githubusercontent.com
199.232.68.133 gist.githubusercontent.com
199.232.68.133 cloud.githubusercontent.com
199.232.68.133 camo.githubusercontent.com
199.232.68.133 avatars0.githubusercontent.com
199.232.68.133 avatars1.githubusercontent.com
199.232.68.133 avatars2.githubusercontent.com
199.232.68.133 avatars3.githubusercontent.com
199.232.68.133 avatars4.githubusercontent.com
199.232.68.133 avatars5.githubusercontent.com
199.232.68.133 avatars6.githubusercontent.com
199.232.68.133 avatars7.githubusercontent.com
199.232.68.133 avatars8.githubusercontent.com
# GitHub End
複製保存後，刷新頁面看是否生效。如果還是不行，就按照下面步驟，根據實際獲得的ip地址修改上面的內容。
使用ipaddress.com深入地址，輸入域名，也可以點擊下面的地址，一般github.com是一個地址，其他的都是相同的地址>（可以都點，也可以點開看，相同的可以按照規律修改到hosts文件中），將查詢出來的地址替換上面的ip地址，然後刷新網頁，即可解決圖片不顯示問題。
https://github.com.ipaddress.com/
https://github.com.ipaddress.com/www.github.com
https://githubusercontent.com.ipaddress.com/raw.githubusercontent.com
https://githubusercontent.com.ipaddress.com/gist.githubusercontent.com
https://githubusercontent.com.ipaddress.com/cloud.githubusercontent.com
https://githubusercontent.com.ipaddress.com/camo.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars0.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars1.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars2.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars3.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars4.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars5.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars6.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars7.githubusercontent.com
https://githubusercontent.com.ipaddress.com/avatars8.githubusercontent.com