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HTML 

              
                

<head>
<title>Sherbrooke 1881</title>
<meta charset="UTF-8">

</head>

<body>

  <div style="height: 1500px;"></div>

  
   <div class = "Strathcona">«Cette place publique est située au centre-ville de Sherbrooke. Elle est appelée "Carré Strathcona" depuis 1904, en l'honneur de Donald A. Smith, un homme d'affaires prospère qui portait le titre de "Lord Strathcona and Mount Royal". Au milieu du 19e siècle, cet endroit, qu'on nommait alors "Marquet Square", était la place du marché de la ville. Dans son Guide historique du Vieux-Sherbrooke, Jean-Pierre Kesteman précise que le sous-sol du premier hôtel de ville (1859) abritait les boucheries, alors que le terrain, qui lui faisait face, servait de marché pour les cultivateurs de la région qui venaient y installer leurs charrettes.» (source: Le Monde en image) </div> -->
 <div style="height: 3000px;"></div>
  
<div id="map"></div>
  
  


</body>
!

CSS 

              
                .intro {
  background: black;
  padding: 40px;
  font-family: 'Pattaya', sans-serif;
  text-align: justify;
  color: white;
  font-size: 25px;
  line-height: 35px;
  font-weight: normal;
  z-index: 999;
  display: flex;
  justify-content: left;
  align-items: left;
  flex-direction: column;
  overflow: hidden;
  width: 30%;
  position: relative;
  border-style: solid;
  border-color: red;
  border-widht: 5px;
  margin-left: 2%;
  border-radius: 2em;
}

.museeBA  {
  background: black;
  padding: 40px;
  font-family: 'Pattaya', sans-serif;
  text-align: justify;
  color: white;
  font-size: 25px;
  line-height: 35px;
  font-weight: normal;
  z-index: 999;
  display: flex;
  justify-content: left;
  align-items: left;
  flex-direction: column;
  overflow: hidden;
  width: 30%;
  position: relative;
  border-style: solid;
  border-color: red;
  border-widht: 5px;
  border-radius: 2em;
  float:right;
}

.Strathcona {
  background: black;
  padding: 40px;
  font-family: 'Pattaya', sans-serif;
  text-align: justify;
  color: white;
  font-size: 25px;
  line-height: 35px;
  font-weight: normal;
  z-index: 999;
  display: flex;
  justify-content: left;
  align-items: left;
  flex-direction: column;
  overflow: hidden;
  width: 30%;
  position: relative;
  border-style: solid;
  border-color: red;
  border-widht: 5px;
  border-radius: 2em;
  float: left
}

html, body {
            padding: 0;
            margin: 0;
        }

        #map {
            position:fixed;
            top:0; bottom:0;
            height: 100%;
            width: 100%;
        }
!

JS 

              
                gsap.registerPlugin(ScrollTrigger)
/*c'est une bonne pratique de prévenir le navigateur qu'on utilise ici une ressource externe*/

var map = L.map('map', {
    center: [45.405268294669476, -71.89448504797008],
    zoom: 17,
    zoomAnimation: true,
  maxBounds: [
  [69,-101],
  [28,-35]
  ],
  maxZoom: 18,
  minZoom: 4,
  zoomControl: false
  });

	var basemap = L.tileLayer('https://stamen-tiles-{s}.a.ssl.fastly.net/watercolor/{z}/{x}/{y}.png',
		{
      attribution: '&copy; <Map tiles by <a href="http://stamen.com">Stamen Design</a>, under <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a>. Data by <a href="http://openstreetmap.org">OpenStreetMap</a>, under <a href="http://creativecommons.org/licenses/by-sa/3.0">CC BY SA</a>.'
    });

basemap.addTo(map);


map.dragging.disable();
map.touchZoom.disable();
map.doubleClickZoom.disable();
map.scrollWheelZoom.disable();
map.boxZoom.disable();
map.keyboard.disable();
if (map.tap) map.tap.disable();
document.getElementById('map').style.cursor='default';

var Wellington = {
"type": "FeatureCollection",
"name": "Wellington",
"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
"features": [
{ "type": "Feature", "properties": { "fid": 1, "Nom": "Carré Strathcona" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -71.892697431549664, 45.403905005173222 ], [ -71.892039215262798, 45.404098637508518 ], [ -71.892462091648213, 45.404638222781173 ], [ -71.893039409843965, 45.404462664502127 ], [ -71.892697431549664, 45.403905005173222 ] ] ] } }
]
}

var Strathcona = L.geoJSON(Wellington, {
      color: 'black',
      fillColor: 'green',
      opacity: 0.75,
})

// ScrollTrigger.create({
//     trigger: ".intro",  /*c'est l'élément déclencheur*/
//     start: "top center", /*on définit où l'on veut que l'animation soit déclenchée, soit ici au milieu de la page*/
//     onEnter: () => map.setView([45.440726,-71.8978827], 10),/*on utilise la Arrow Function, qui est juste une façon plus courte en JS de définir une fonction; voir https://www.w3schools.com/Js/js_arrow_function.asp*/
//     markers: "true" /*permet de visualiser dans Codepen le début et la fin de l'animation; ne pas inclure dans votre projet final*/
//     })  
 
// ScrollTrigger.create({
//     trigger: ".museeBA",  /*c'est l'élément déclencheur*/
//     start: "top center", /*on définit où l'on veut que l'animation soit déclenchée, soit ici au milieu de la page*/
//     onEnter: () => map.setView([45.405268294669476, -71.89448504797008], 18),/*on utilise la Arrow Function, qui est juste une façon plus courte en JS de définir une fonction; voir https://www.w3schools.com/Js/js_arrow_function.asp*/
//     markers: "true" /*permet de visualiser dans Codepen le début et la fin de l'animation; ne pas inclure dans votre projet final*/
//     })  

ScrollTrigger.create({
    trigger: ".Strathcona",  /*c'est l'élément déclencheur*/
    start: "top center", /*on définit où l'on veut que l'animation soit déclenchée, soit ici au milieu de la page*/
onEnter: () => Strathcona.addTo(map),
  onLeave: () => Strathcona.removeFrom(map),
onEnterBack: () => Strathcona.addTo(map),
onLeaveBack: () => Strathcona.removeFrom(map)
    })
!
999px

Console