<html><head><style> #map { height: 400px; width: 100%; } </style></head><body> <h3>My Google Maps Demo</h3> <div id="map"></div> <script> function initMap() { var uluru = {lat: -25.363, lng: 131.044}; var map = new google.maps.Map(document.getElementById('map'), { zoom: 4, center: uluru }); var marker = new google.maps.Marker({ position: uluru, map: map }); } </script><script async="" defer="defer" src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&amp;callback=initMap"> </script></body></html>