by wp-centrics on WordPress.org
Add sticky top and bottom bars with multiple banners: text banners with optional buttons/CTAs, or responsive images.

Homepage with top and bottom bar
Top Bar Notification & Sticky Banners is the most flexible and configurable, yet simple, plugin for displaying bars at the top or bottom of your site. Easily add promotions, announcements, messages, or banners to your site for your visitors.
Compatible with most themes, it includes 7 different sticky methods. Add image banners, announcements, and messages. Easily create your own styles with its built-in style editor using your own fonts.
⚡Demo here: Run live preview
There is more than one way to customize:
1. You can add a custom class on each banner.
2. You can add inline-styles on each style edition page (with live preview)
3. You can add your own CSS in the advanced settings
Use this shortcodes in the banner content editor:
[topbarnsb-desktop] (your desktop image or text content) [/topbarnsb-desktop]
[topbarnsb-mobile] (your mobile image or text content) [/topbarnsb-mobile]
…in any banner you need.
Template system with overrides for theme developers: override whole plugin CSS, banner style CSS or the banner HTML as you need.
To do it, copy the plugin /templates folder into your theme, and rename the folder to /topbarnsb. Then edit the files as you need.