There isn't much I can do with that. Most likely it is a cache issue: just google "How to clear the browser's cache" and that should solve the issue.
If the issue persists, then it might be your hosting provider caching the file (for which you'll have to wait or check with them what you options they provide you).
If the issue persists, then you might have not edited the file properly. Anyway, with so little information about the issue, it is just guessing.