Is there a page or document of what's supposed to constitute valid HTML/CSS? I am assuming no iframes nor inline scripts are allowed. But transitions, hover states for desktop devices, and other styling goodies would be welcome!
@BurgeoningHope wrote:Is there a page or document of what's supposed to constitute valid HTML/CSS? I am assuming no iframes nor inline scripts are allowed. But transitions, hover states for desktop devices, and other styling goodies would be welcome!
Hi @BurgeoningHope, there's no formal document because the signature line wasn't specifically designed for the purpose we use it for.
The mods and admins can help with system issues if there's a permissions problem, but as for the HTML you will have to do some 'trial and error' if you want to get beyond the basic line of cards and plain text.
I'm sorry I don't have more to offer. 
--UB
Yep - no style blocks no javascript no lots of other stuff - basically, nothing that would make for stuff that changes on display. No worries - there's plenty we can use to make for attractive blocks! It was fun to play 
Thanks!