body, #primaryContent{
background-image:url(https://t1.daumcdn.net/cafeattach/1MThB/1c699583320f8ba9abe37ad0a1615cc156d50fd2);
background-attachment: fixed; 
background-color:#ffffff;
background-repeat: no-repeat ; 
background-position: center bottom; 
background-size: cover; 
}