Material Design elevation (dp 0-24) as Tailwind utility classes.
The actual box-shadow values are defined once, in CSS, in
priv/static/phoenix_paper.css as @utility pp-elevation-0 .. pp-elevation-24.
This module only maps an integer level to the matching class name.
Class names below are written as full literal strings (never built with
string interpolation) so Tailwind's static source scanner can find them in
this file — see the "Tailwind class safety" rule in AGENTS.md.
Summary
Functions
Returns the pp-elevation-N class for the given level, clamped to 0..24.