feedback location defaults to upper left

[Bill Levine]

I am trying to provide keypress feedback for subjects after they respond to a multiple-choice question. The stim, loc, time columns are:

feedback; .5,.75,0; 2000

without the semicolons. I'd like the keypress feedback to be horizontally centered and appear about 3/4 of the way down the screen. But no matter what I put in the loc column, the feedback (which is correct) shows up in the upper left corner of the screen (which is not what I want). I've attached the input and styles file here. Any help would be appreciated!