Firefox 5 tab scrolling issue

I like seeing all my tabs at once in my browser, so here is how I did it in Firefox 5:

1. Open Firefox menu -> Help -> Troubleshooting information.
2. Click "Open Containing Folder" button.
3. Create "chrome" folder inside the folder that had just opened up after step 2.
4. Create a text file, call it "userChrome.css" and paste the following into it:

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); 

.tabbrowser-tab {min-width: 016px !important;}
.tabbrowser-tab {clip-width: 016px !important;}