body, #primaryContent{
background-image:url(https://t1.daumcdn.net/cafeattach/1MThB/09b83fa1018090bb6e52dc35d62b6d9a493bf0b8);
background-attachment: fixed; 
background-color:#ffffff;
background-repeat: no-repeat ; 
background-position: center bottom; 
background-size: cover; 
}