#bbs_contents body ,#primaryContent 
.comment_section,#Content
{
background:
url(https://t1.daumcdn.net/cafeattach/1ZFir/ad094b1001fafb8b0d939fbd1d8ba4bc77519708);
background-attachment: fixed;
background-repeat: repeat-y; 
background-position: bottom left 200px;
background-size: 600px;
padding: 15px;
}
#bbs_contents body ,#primaryContent 
.cont_comment,#Content
{
position:relative; width: 600px; left: 0px;
font-weight: bold; color: #000000;
}