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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <!-- adapted from -->

<svg viewBox="0 0 960 600">
  <rect width="100%" height="100%" class="background"></rect>

<div>click on a state</div>

<script src=""></script>
<script src=""></script>
              body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  text-align: center;
  font-size: 0.9em;
  overflow: hidden;

svg {
  max-width: 960px;
  max-height: 90vh;
  stroke-linejoin: round;
  stroke-linecap: round;

rect.background {
  fill: none;
  pointer-events: all;

path.feature {
  stroke-width: 0.75px;
  stroke: #fff;
  fill: #a6bddb;
  cursor: pointer;

              // adapted from

var svg ="svg");

// lookup svg width and height from DOM instead of hard-coding values
var svgWidth = +svg.attr("viewBox").split(" ")[2],
  svgHeight = +svg.attr("viewBox").split(" ")[3];

// get reference to the <rect> node, which is invisible and in the background
// wire up a click listener so that the brought up feature can be "reset" later
var rect ="rect.background").on("click", reset);

// get reference to the <g> node
// geojson features will be drawn here
var g ="g");

// the D3 geographic path generator is used for drawing the svg paths of geojson
// and during bounding box calculations
var geoPathGenerator = d3.geoPath();

// transition-related vars
var activeFeature =,
  transitionDuration = 1250,
  featureStrokeWidth = 0.75,
  featureStroke = "#fff",
  featureFill = "#a6bddb",
  // during transition:
  //  - swap stroke and fill colors
  //  - change stroke width
  broughtUpFeatureStrokeWidth = 3,
  broughtUpFeatureStroke = "#a6bddb",
  broughtUpFeatureFill = "#fff";

// load and draw US states topojson
  .then(function(loadedTopoJson) {
    var allStatesGeoJsonData = topojson.feature(

      .attr("d", geoPathGenerator)
      .attr("class", "feature")
      .on("click", bringUpFeature);

function bringUpFeature(geoJsonDatum) {
  if (activeFeature.node() === this) {
    return reset();

  activeFeature.classed("active-feature", false);

  activeFeature = d3
    .classed("active-feature", true)

  var t = getGeoBoundsTransform(


    .style("stroke-width", broughtUpFeatureStrokeWidth / t.scale + "px")
    .style("stroke", broughtUpFeatureStroke)
    .style("fill", broughtUpFeatureFill)
    .attr("transform", "translate(" + t.translate + ") scale(" + t.scale + ")");

  var otherFeatures = g.selectAll("path.feature:not(.active-feature)");

  // remove the original click listener before transitioning the other features out of view
  otherFeatures.on("click", null);

    .style("opacity", "0")
    .on("end", function(d, idx, nodeList) {
      // completely remove the display of the other features after transition is over
      if (idx === nodeList.length - 1) {"display", "none");

function reset() {
    .style("stroke-width", featureStrokeWidth)
    .style("stroke", featureStroke)
    .style("fill", featureFill)
    .attr("transform", "");

  var otherFeatures = g.selectAll("path.feature:not(.active-feature)");

  // reset display of other features before transitioning back into view"display", "");

    .style("opacity", "1")
    .on("end", function(d, idx, nodeList) {
      // reestablish the original click listener after transition is over
      if (idx === nodeList.length - 1) {
        otherFeatures.on("click", bringUpFeature);

  activeFeature.classed("active-feature", false);
  activeFeature =;

function getGeoBoundsTransform(geoJsonDatum, geoPathGenerator, width, height) {
  var bounds = geoPathGenerator.bounds(geoJsonDatum),
    dx = bounds[1][0] - bounds[0][0],
    dy = bounds[1][1] - bounds[0][1],
    x = (bounds[0][0] + bounds[1][0]) / 2,
    y = (bounds[0][1] + bounds[1][1]) / 2,
    scale = 0.9 / Math.max(dx / width, dy / height),
    translate = [width / 2 - scale * x, height / 2 - scale * y];

  return {
    translate: translate,
    scale: scale

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