Board Thread:Support Requests - Getting Technical/@comment-5111452-20150827065204/@comment-4731443-20150827175523

If you do want to switch to portable infoboxes, though, your current style would be easy to emulate since it's consistent all across. Simply refer to Help:PortableInfoboxes/CSS to learn which classes to use to create a custom style for your infoboxes. You can define the background for the whole box in one statement, make the text upper-case in two statements (one for all headers, one for all values), etc.