body{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
    width: 100%;
  background-image: url(jungle.jpg);
 background-repeat: no-repeat; 
background-attachment: fixed;
background-position: center; 
background-size: cover; 
}

img{text-align:center;}

h1{text-align:center; color:white;}