Woah, that is hardly readable indeed! Superpowers can unfortunately be pretty inconsistent with the way it renders fonts. Out of curiosity, what browser on what system are you using?
I can't guarantee to fix it though, as this is quite an old game. For now I suggest to skip the dialogs, the narrative of the game is not that much important, and the mechanics are (hopefully) self-explanatory. (the only important information on this screen is "RIGHT to continue")