What exactly is a sticky bar?
A sticky bar is a horizontal bar that you can “stick” to the top or bottom of a page on your website. It’s a type of website conversion tool that’s easily customizable and makes sure that your (hopefully high-converting) message is always displayed prominently, yet non-intrusively.
Mobile best practice tip: play nice with Google
If you’re expecting significant mobile traffic and want to maintain your page’s awesome SEO, create a sticky bar version of a popup for your mobile experience. Google will look upon you (and your site ranking) favourably for being mindful of visitors who are browsing your site on a smaller screen like a phone.