As they did for JavaScript, Sacha Greif and Raphaël Benitte launch the state of CSS 2019 based on survey. Check this out on this beautiful and clean website.
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Sortable
Makes any table with class="sortable", sortable. The user can click on a table header and change the sorting of the table rows.
Tailkit
Carefully crafted, easy to customize, fully responsive UI Components, Templates and Tools for your Tailwind CSS based projects.
All About mailto: Links
Check this post written by Chris Coyier on mailto: links. "It's pretty easy to use, but as with anything web, there are lots of things to consider."