#bbs_contents body ,#primaryContent
.comment_section,#Content
{
background:
url(https://t1.daumcdn.net/cafeattach/1Feb3/db0db113c0e5473d72a031d2f7151b6c1fa12735),
linear-gradient(90deg,  #ffffff, #ffffff, #ffffff);
background-attachment: fixed;
background-repeat:repeat-y;
background-position: bottom left 800px, bottom left 250px;
background-size:300px, 900px;
padding : 15px;
}
#bbs_contents body ,#primaryContent
.cont_comment,#Content
{
position:relative; width:900px;left:0px;
font-weight:bold; color:#000000;
}