Reset your browser
You can "hard reset" your browser: clear caches and delete cookies. Please see this post from the University of Illinois (Urbana-Champaign), or read on for more info.
A page isn't displaying right in my browser
...e.g. Apple Safari or Google Chrome. This can be due to a stale "cache" or "cookie".
So, sometimes browsers have saved an old version of a webpage: even though the page has changed, you're still getting the old one. This is called a stale "cache". Browser "cookies" can also become stale.
To fix this, you can "hard reset" your browser: basically delete old cache and cookies. This is generally a safe procedure, but note this will cause websites to forget about you: you may have to login again. Please review this blog post for more information.
If you continue to experience trouble, please create a ticket with the web team.