html { 
  background: url(bg2.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

body {
margin: 0;
padding: 40px 20px;
font: 400 16px/normal 'Open Sans', sans-serif;
text-align: center;
color: #000;
}