Lucy Tomas

This lightweight plugin will display a simple notification bar on the bottom of the page with a button to hide the notification.
<ul>
<li>Possible to add a ‘More Information’ button with a link on it. </li>
<li>All texts, colours and font size can be changed from a simple settings form.</li>
<li>Responsive.</li>
<li>Compatible with Polylang and WPML multilingual plugins</li>
</ul>

Simple Cookie Notification Bar

Displays a simple cookie notification bar on the bottom of the page, customizable colours and texts.

cc2017

Want to easily display a sticky window bar at the page bottom while being handy at the back end? Then this plugin is for you. It can easy integrate form, ads, images and html content inside the bar, all the content can be set from admin panel.
Use the Bottom fixed window plugin to create sticky bar that stay in the visible screen area especially at the page bottom when the page is scrolled up or down.
Bottom fixed window plugin cross the screen with a 100% width and the height can be configured. It’s a simple plugin that only adds a block of html and js code just before the closing body tag.
<ul>
<li><a href="http://wp.cancms.com/cancms-wp-float-bar-188" rel="nofollow ugc">Manual and demo</a></li>
</ul>
<h4>Compatibility</h4>
The plugin is not working with all themes! Theme requirements:
<ul>
<li>jQuery is required, jQuery version 1.8.3 (or later) is recommended.</li>
<li>No JavaScript errors caused by other plugins and scripts.</li>
<li><code>wp_head()</code> and <code>wp_footer()</code> functions in header.php and footer.php files.</li>
</ul>

Bottom suspended window, 底部悬浮窗

A simple sticky/suspended/fixed bar to the page footer. It can display ads and form content inside, which can be defined from back end.

Simple Cookie Notification Bar vs Bottom suspended window, 底部悬浮窗