JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<div id="map-canvas"></div>

CSS

html, body, #map-canvas {
     margin: 0;
     padding: 0;
     height: 100%;
 }

JavaScript

function initialize() {
  var myLatlng = new google.maps.LatLng(57.671431,14.976811);
  var myMaplng = new google.maps.LatLng(57.671828,14.976794);
  var mapOptions = {
    zoom: 15,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    center: myMaplng,
    disableDefaultUI: true
  };

  var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

  var contentString = '<div id="content" style="padding: 0;margin:0;">'+
      '<div id="siteNotice">'+
      '</div>'+
      '<h1 id="firstHeading" class="firstHeading" style="padding: 0;margin:0;">lololol</h1>'+
      '<div id="bodyContent">'+
      '<p>Kaserngatan 24A<br>575 34 sdad<br></p>På den här addressen ligger vårat temporära kontor.. ' + 
      '</div>'+
      '</div>';

  var infowindow = new google.maps.InfoWindow({
      content: contentString
  });

  var marker = new google.maps.Marker({
      position: myLatlng,
      map: map,
      title: 'lololol'
  });
  google.maps.event.addListener(window, 'load', function() {
    infowindow.open(map,marker);
  });
  infowindow.open(map,marker);
  //################
  //Comment out the line below to see the difference
  map.panBy(0,-500);
}

google.maps.event.addDomListener(window, 'load', initialize);