wpnaga

WP Sticky Header is the plugin to display some content/notification bar on top or bottom of the pages. It can be closed and the colour of the background and text colour can be modified. Notification bar can be shown on all pages or only in home page or in all posts or in selected pages / posts. Once installed and activated, settings menu will appear on the dashboard. One can customize the notifications bar. Auto close option is also available.

WP Sticky Header

Plugin to display some content/notification on top/bottom of the webpage.

Wombat Plugins

studiowombat

This lightweight plugin adds a bottom bar on mobile devices, like on the StoreFront theme.
FEATURES 
 * The bar links to your cart page. 
 * Allow searching products from the bar. 
 * Link to you account page. 
 * Change the design’s colors. 
 * The cart icon updates when a product is added to cart.
REQUIREMENTS 
* PHP 5.4 or higher 
* WordPress 3.7 or higher 
* WooCommerce 3+

WooCommerce Bottom Bar for Mobile

This lightweight plugin adds a bottom bar on mobile devices, like on the StoreFront theme.

WP Sticky Header vs WooCommerce Bottom Bar for Mobile