/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
  height: 80%;
  width: 80%;
  margin: auto;
}

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