JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Simple Markers</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <div id="map"></div>

    <!-- Async script executes immediately and must be after any DOM elements used in callback. -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly&channel=2"
      async
    ></script>
  </body>
</html>

CSS

/* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
#map {
  height: 100%;
}

/* Optional: Makes the sample page fill the window. */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

JavaScript

function initMap() {
  const myLatLng = { lat: -25.363, lng: 131.044 };
    const myLatLng1 = { lat: -25.363, lng: 143.044 };
 const image =
    "https://developers.google.com/maps/documentation/javascript/examples/full/images/beachflag.png";
  
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 4,
    center: myLatLng,
  });

  new google.maps.Marker({
    position: myLatLng,
    map,
    title: "Hello World!",
    visible :true,
    zIndex:99
    
  });
   new google.maps.Marker({
    position: myLatLng1,
    map,
    title: "Hello World!",
    visible :true,
    zIndex:5,
     icon: image,
    
  });
}