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‎dist/index.html‎

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@@ -60,6 +60,7 @@ <h1>Maps JSAPI Samples</h1>
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<li><a href='/samples/control-simple/dist'>control-simple</a></li>
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<li><a href='/samples/dds-datasets-point/dist'>dds-datasets-point</a></li>
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<li><a href='/samples/dds-datasets-polygon/dist'>dds-datasets-polygon</a></li>
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<li><a href='/samples/dds-datasets-polygon-colors/dist'>dds-datasets-polygon-colors</a></li>
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<li><a href='/samples/dds-datasets-polyline/dist'>dds-datasets-polyline</a></li>
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<li><a href='/samples/dds-region-viewer/dist'>dds-region-viewer</a></li>
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<li><a href='/samples/deckgl-heatmap/dist'>deckgl-heatmap</a></li>

‎dist/samples/dds-datasets-polygon-colors/app/.eslintsrc.json‎

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{
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"extends": [
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"plugin:@typescript-eslint/recommended"
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],
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"parser": "@typescript-eslint/parser",
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"rules": {
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"@typescript-eslint/ban-ts-comment": 0,
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"@typescript-eslint/no-this-alias": 1,
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"@typescript-eslint/no-empty-function": 1,
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"@typescript-eslint/explicit-module-boundary-types": 1,
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"@typescript-eslint/no-unused-vars": 1
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}
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}

‎dist/samples/dds-datasets-polygon-colors/app/README.md‎

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# Google Maps JavaScript Sample
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## dds-datasets-polygon-colors
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This example shows an approach to styling polygon geometry based data features.
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## Setup
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### Before starting run:
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`npm i`
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### Run an example on a local web server
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`cd samples/dds-datasets-polygon-colors`
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`npm start`
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### Build an individual example
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`cd samples/dds-datasets-polygon-colors`
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`npm run build`
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From 'samples':
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`npm run build --workspace=dds-datasets-polygon-colors/`
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### Build all of the examples.
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From 'samples':
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`npm run build-all`
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### Run lint to check for problems
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`cd samples/dds-datasets-polygon-colors`
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`npx eslint index.ts`
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## Feedback
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For feedback related to this sample, please open a new issue on
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[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).

‎dist/samples/dds-datasets-polygon-colors/app/index.html‎

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<!doctype html>
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<!--
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@license
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Copyright 2026 Google LLC. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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-->
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<!-- [START maps_dds_datasets_polygon_colors] -->
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<html>
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<head>
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<title>Style a polygon data feature with more detail</title>
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<link rel="stylesheet" type="text/css" href="./style.css" />
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<script type="module" src="./index.js"></script>
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<!-- prettier-ignore -->
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<script>(g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})
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({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
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</head>
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<body>
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<gmp-map center="40.580732, -74.152826" zoom="14" map-id="5cd2c9ca1cf05670">
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<div id="attribution" slot="control-block-end-inline-start">Data source: NYC Open Data</div>
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</gmp-map>
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</body>
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</html>
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<!-- [END maps_dds_datasets_polygon_colors] -->

‎dist/samples/dds-datasets-polygon-colors/app/index.ts‎

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/**
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* @license
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* Copyright 2026 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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// [START maps_dds_datasets_polygon_colors]
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const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;
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let innerMap;
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// [START maps_dds_datasets_polygon_colors_style_function]
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function setStyle(/* FeatureStyleFunctionOptions */ params) {
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const datasetFeature = params.feature;
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// 'typecategory' is an attribute in this Dataset.
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const typeCategory = datasetFeature.datasetAttributes['typecategory'];
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switch (typeCategory) {
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case 'Undeveloped': // Color undeveloped areas blue.
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return /* FeatureStyleOptions */ {
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strokeColor: 'blue',
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strokeWeight: 2,
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strokeOpacity: 1,
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fillColor: 'blue',
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fillOpacity: 0.3,
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};
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break;
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case 'Parkway': // Color historical house sites red.
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return /* FeatureStyleOptions */ {
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strokeColor: 'red',
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strokeWeight: 2,
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strokeOpacity: 1,
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fillColor: 'red',
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fillOpacity: 0.5,
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};
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break;
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default: // Color other type categories green.
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return /* FeatureStyleOptions */ {
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strokeColor: 'green',
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strokeWeight: 2,
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strokeOpacity: 1,
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fillColor: 'green',
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fillOpacity: 0.3,
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};
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break;
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}
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}
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// [END maps_dds_datasets_polygon_colors_style_function]
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async function initMap() {
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// Request needed libraries.
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await google.maps.importLibrary("maps") as google.maps.MapsLibrary;
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// Get the inner map.
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innerMap = mapElement.innerMap;
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// Dataset ID for NYC park data.
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const datasetId = 'a75dd002-ad20-4fe6-af60-27cd2ed636b4';
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const datasetLayer = innerMap.getDatasetFeatureLayer(datasetId);
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datasetLayer.style = setStyle;
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}
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initMap();
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// [END maps_dds_datasets_polygon_colors]

‎dist/samples/dds-datasets-polygon-colors/app/package.json‎

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{
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"name": "@js-api-samples/dds-datasets-polygon-colors",
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"version": "1.0.0",
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"scripts": {
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"build": "tsc && bash ../jsfiddle.sh dds-datasets-polygon-colors && bash ../app.sh dds-datasets-polygon-colors && bash ../docs.sh dds-datasets-polygon-colors && npm run build:vite --workspace=. && bash ../dist.sh dds-datasets-polygon-colors",
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"test": "tsc && npm run build:vite --workspace=.",
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"start": "tsc && vite build --base './' && vite",
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"build:vite": "vite build --base './'",
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"preview": "vite preview"
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},
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"dependencies": {
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}
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}

‎dist/samples/dds-datasets-polygon-colors/app/style.css‎

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/**
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* @license
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* Copyright 2026 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* [START maps_dds_datasets_polygon_colors] */
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/*
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* Optional: Makes the sample page fill the window.
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*/
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html,
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body {
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height: 100%;
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margin: 0;
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padding: 0;
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}
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#attribution {
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background-color: rgba(255, 255, 255, 0.7);
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font-family: "Roboto", "Arial", "sans-serif";
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font-size: 10px;
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padding: 2px;
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margin: 2px;
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}
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/* [END maps_dds_datasets_polygon_colors] */

‎dist/samples/dds-datasets-polygon-colors/app/tsconfig.json‎

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{
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"compilerOptions": {
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"module": "esnext",
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"target": "esnext",
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"strict": true,
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"noImplicitAny": false,
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"lib": [
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"es2015",
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"esnext",
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"es6",
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"dom",
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"dom.iterable"
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],
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"moduleResolution": "Node",
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"jsx": "preserve"
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}
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}

‎dist/samples/dds-datasets-polygon-colors/dist/assets/index-BqXZ8XbW.js‎

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‎dist/samples/dds-datasets-polygon-colors/dist/assets/index-DBFNArx3.css‎

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html,body{height:100%;margin:0;padding:0}#attribution{background-color:#ffffffb3;font-family:Roboto,Arial,"sans-serif";font-size:10px;padding:2px;margin:2px}

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