Some changes have been applied now - thank gods ;)

We have now identical classes .error and .warning with white font on red background.

When interested try to reply here, while leaving exactly one word in the title.

Preview should show this warning then:

• What you get

  Title must be more than one word!

  (span with new class)

• What to expect (almost):

  Title must be more than one word!

  (simulation without CSS but table and font)

NB: do a hard reload like Shift-Ctrl-R ° to ensure the old CSS isn't taken from the cache.

update

this might collide with the color-theme you've configured in your settings.

°) or

• Ctrl-F5 Firefox
• Shift-F5 Chrome
• For completeness: there are more tricks with Key-modifiers and clicking Reload-symbol or typing Return inside the adressbar