When establishing font families, you need to have fallbacks and stuff. Otherwise it'll be the browser's default.
Also, try zooming all the way to the sixties and try submitting each time. If that doesn't work, clear your cache, close the browser and reopen it, and try again. If the problem still persists, try another browser. If that doesn't work, reset the code and do it again. The repetition will help fortify
Edit: Not all fonts are supported by browsers. Some have a select few that they support, another browser's could be different. That's why we have the fallbacks.