Big problem with the Q&A plugin

When I will write a question, you can not see the text. But when you try to highlight it, you can see it. There is no problem, when you are writing a headline to the question. Is it possible to change the color of the letters. It looks like they are white as the background. Can it be done in the plugin editor, and where in the plugin code. You can try it yourself by going to my site http://meework.com, and click on the "Ask & Answer menu on the right side of the screen