This exact issue has been raised by several other users earlier today. Next time, please take a quick look through recent threads to see if someone has already asked the same question.
As for the actual answer, this is typically what happens when the styling doesn't load correctly. Try clearing your browser's cache and then revisit the page. If that doesn't help, try disabling any ad blockers you have as they could potentially be causing the issue as well. If you still can't solve the issue, just wait a day or two. It usually resolves itself. If even this doesn't work, then you can ask for additional help at that time.