Countdown timer

I am looking for an option for a countdown timer for when specials end. I have a string of code that works, but in Sparkle, it doesn’t seem to recognize the font size in the code, whereas in HTML Egg 2 it does recognize the code. It does display and run properly in Sparkle, but it’s just not allowing me to change the font size (in the code). I am not married to this particular piece of code, but it’s nice because it’s not tied to an outside site. Thanks for any suggestions and I am loving the Sparkle app!