Native #HTML #WebComponents tip:

To select all the #customElements you can use `element-name` in the global CSS or `:host(#IDDoesNotExist)` in the template stylesheet. The `:host()` pseudoclass crosses the #shadowDOM boundary.

The tip is: In terms of #specificity, the global #CSS wins.

(Lots of hash tagging b/c no one knows this and I want it to be found. 🤞 that it's correct)