DatoCMS Site Search is a way to deliver tailored search results to your site visitors. You can think of it as a replacement for the now discontinued Google Site Search.
Via CDN add our JS and CSS in your page:
<link rel="stylesheet" href="https://unpkg.com/datocms-search/styles/index.css" />
<script src="https://unpkg.com/datocms-search/dist/datocms-search.widget.js"></script>