body {
  margin: 0px;
  padding: 0px;
}

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

.wrap {
  margin-top: 50px;
  margin-left: 50px;
}