An announcement bar or sometimes known as a promo bar, are ideal for promoting specials or any key messaging at the top of your site. Story allows you show the message, with link on the all pages of your site or only the homepage.
Activate the announcement bar in the Header section settings. Add your promotional message, link and use the other customization options:
Choose a link to help customers find your promotion:
The announcement bar takes on a transparent background with the rest of your header when using a transparent header. Upon hover, the solid background appears and a customized background color will be displayed for the promo bar: