SOURCE

<iframe src="http://www.w3cways.com/demo/baidumap.html" width="100%" height="400" frameborder="0" style="border:0" allowfullscreen></iframe>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  text-align: center;
  font-family: 'Lato';
}

h2 {
  margin: 20px;
  padding-top: 20px;
  clear: both;
}

iframe {
  filter: saturate(5);
}