body,html{
    height:100%;
    font-size: 1rem;
}
body {
  background: url('https://decker.sk/image/background.jpg') no-repeat center center fixed;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  background-size: cover;
  -o-background-size: cover;
}
h1 {
	color: #3b637d;
}