HTML5 output - non-Windows potential issues

[Feebeegeebee]

Hi,
I'm hoping to be able to switch to using Flare 8 soon and generate HTML5 output for our product.
However, I have no real control over where the help will be installed - either locally or on a server. (Many of our customers do not allow users any web access from the machines they work on, for security reasons.)
In addition, users are most likely to be running our product on non-Windows machines, so if the help is stored locally on those machines, are there likely to be issues with the output on Linux, UNIX or Macs?
Thanks for any help on this.
Regards,
Feebeegeebee