html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

body {
 background-color: rgba(236, 240, 241,.4);
}

html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

body {
 background-color: rgba(236, 240, 241,.1);
}

Make more transparent the body background color
Make more transparent the body background color
