https://blog.wongcw.com/2020/06/28/firefox-79-%e5%b0%87%e5%85%81%e8%a8%b1%e7%94%a8%e6%88%b6%e6%b8%ac%e8%a9%a6%e6%9c%aa%e7%99%bc%e5%b8%83%e7%9a%84%e5%af%a6%e9%a9%97%e5%8a%9f%e8%83%bd/