Copy Button shapes
All three copy and announce. They differ in what the reader sees and where the announcement text comes from.
Worded
The copied label reads Copied, so copied-message is optional — the part’s own text is the fallback.
Icon only
Two glyphs and no text, which is why copied-message exists: there is nothing to read an announcement off.
From the page
from reads the element it names — .value for an input, select, or textarea, and text for anything else.
pnpm build:site