Scrolling text is a good way to convey important message to viewers.If you have any notification or latest news that you want to share with your view then this trick may help you get your viewers attention.
The first one is very simple with white background and second has
blue background.you can text and change color of background.
you can replace simple scrolling text message with your text ans save it.
Note: you can add scrolling text in html of post or add html/javascript gadget and paste above code and save it.