body, #primaryContent{
background-image:url(https://t1.daumcdn.net/cafeattach/1MThB/2f2cfece9fb9cb97635fea630f55ad143cc90251);
background-attachment: fixed; 
background-color:#ffffff;
background-repeat: no-repeat ; 
background-position: center bottom; 
background-size: cover; 
}