ID:1300908
 
(See the best response by DarkCampainger.)
I am about to get into programming an extensive system using a browser for a few parts of my interface and I was wondering if there were any limits to the stylistic control that we have? for example can we use CSS? if so what version?, it seems that javascript is supported but are there limits I should know about? thanks in advance.
Best response
I believe the browser still uses whatever version of Internet Explorer the user has installed. So support whatever version of IE you want to (I would suggest at least IE8, which is the last version to support Windows XP). I can't think of any additional limitations that BYOND itself imposes.

You can use a site like http://caniuse.com/ to see what each version supports.
Yeah caniuse seems to look terrible in the BYOND browser && I personally have IE 10 installed, this is going to require some working around and very old code but I know for a fact I can do some fancy things as I've done them in the past. It has just been almost a decade.