section{
  /*border:solid 1px #C0C0C0;*/
  max-width:100%;
  margin:0 auto;
  display: flex;
}

.column{
  border:solid 1px gray;
  margin:10px;
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 0;
}


/* 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;
    }