为什么这个倒计时javascript不能在chrome以外的任何浏览器上运行

There don't appear to be any errors in Safari and it's working perfectly on Chrome, the numbers just don't show up in Safari. I've also checked the mobile version of Safari and Chrome, neither of those work. I honestly can't fathom what's wrong, maybe I've formatted something incorrectly and Chrome is compensating for that automatically.There don't appear to be any errors in Safari a