body, #primaryContent{
background-image:url(https://t1.daumcdn.net/cafeattach/1MThB/e7a68c938681c9a2ad346929467575821e71f0a2);
background-attachment: fixed; 
background-color:#ffffff;
background-repeat: no-repeat ; 
background-position: center bottom; 
background-size: cover; 
}