Can I increase the size of Closed Captions?

I agree that the captions size is way too small, so I tried the workaround suggested by Wendy. Unfortunately however, when I use this method to increase the player font size, the font size increases but the icons do not increase in size, making the buttons look extremely 'out of whack' - see screenshot attached. We need to keep both the icon and the text on the buttons. So unfortunately, I'm unable to use this method to increase the player font size. Is this a known issue that's being worked on? (This is happening with the Modern player in Articulate 360).