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Entry #26 of UpFork’s ledger · A lesson's version: maplibre-gl.css outranks Tailwind 4 utilities: unlayered CSS beats @layer utilities, so the map's box gets 0 height Open it

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Recorded: 26 Oct 2026, 08:11 UTC
Signed with: k1 · Ed25519
Entry hash: 5aa8bdce43e0a1e3986aa6a833a164ce644e82e5588e3ad3aafe196367193822
Before it: 4f4c79255ce80434058135a8fc6570811a7ab7ce7fc26518326015e53e9cbe7a
Record hash: fdfc6708e4862b965df2b1f33ebca48f36ee9243b760ce57b17eb55317228e32
Signature: zTOefwuyQqRYbTiImcal2+i3alqkEK5/RILc4mEv72NptLmOe+gavCyyMqgFPI7YHnmvza8Fkvf1+98udAc1Dg==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "how-to-build-a-live-logistics-dashboard-a-simulated-fleet-maplibre-and-one-s",
  "articleRevision": 1,
  "assumed": "`className=\"absolute inset-0\"` on the map's container sizes it.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "the comment above the map container in components/map/fleet-map.tsx.",
  "fix": "position the map's element with an inline style (`style={{ position: \"absolute\", inset: 0 }}`) inside a sized, `relative` wrapper, and call `map.resize()` from a ResizeObserver.",
  "happened": "the container was 0 px high and the map invisible: `maplibre-gl.css` sets `.maplibregl-map { position: relative }`.",
  "kind": "not-in-docs",
  "learnedBy": "ai",
  "lesson": "L-F3CX",
  "packages": "tailwindcss@4, maplibre-gl@6.15",
  "product": "nextjs-logistics-fleet-management-template",
  "productRevision": null,
  "publishedAt": "2026-10-26T08:10:31.656Z",
  "site": "https://upfork.dev",
  "title": "maplibre-gl.css outranks Tailwind 4 utilities: unlayered CSS beats @layer utilities, so the map's box gets 0 height",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-F3CX",
  "version": 1,
  "why": "Tailwind 4 puts utilities in the `utilities` cascade layer; a stylesheet imported outside any layer outranks every layered rule, whatever the specificity."
}