Board Thread:Support Requests - Getting Technical/@comment-188432-20130406153509/@comment-4519283-20130407140852

If you go to http://spoon.net, they have a software (Windows only) that will allow you to run any version of any browser (except Internet Explorer). Or, you can look up the command on http://w3schools.com. Here it says that border-radius is supported in Firefox 4+.