If you login with a BrowserStack account, you can test your local work on emulators. Note for Safari on a Mac, you have to use specific ports.
"For now, Safari 8 on Yosemite allows Local testing via a limited number of ports. The ports that are most easy to remember are 80,3000, 4000, 5000, 8000 and 8080." - StackOverFlow post
So this for example works:
https://localhost:8080