#bbs_contents body ,#primaryContent 
.comment_section,#Content
{
background:
linear-gradient(90deg, #a8cef2, #f9abc8, #a8cef2);          
}
#bbs_contents body ,#primaryContent 
.cont_comment,#Content
{
position:relative; width: 520px; left: 0px;
font-weight: bold; color: #000000;