In your store's Admin area, go Go to the Design > Banner → Banner Manager
You can specify the text and background colors of a banner using a HTML tags within the banner.
Status: MUST be "ON" for banner to appear in your store. Status allows you to disable the banner from being showed on your site without having to delete it;
Name: banner name;
Banner Group Name: select Banner Group Name or create new;
Sort Order in Group: Sort Order set's the order of in which the Banner will be displayed amongst others n the Banner Group;
Date Range of Activity: select start & end dates dates to banner will be displayed on storefront. Leave blank to display banner all the time;
Banner HTML-code: the HTML code of Text Banner.
Make sure you have disabled Adblock like addons in browser - by default Adblock trigger false positive alarm and may prevent to load HTMLcode editor or some banners.