#bbs_contents body ,#primaryContent 
.comment_section,#Content
{
background:
linear-gradient(70deg, #f3e65d, #8ed672, #f3e65d, #8ed672);
}
#bbs_contents body ,#primaryContent 
.cont_comment,#Content
{
position:relative; width: 560px; left: 0px;
font-weight: bold; color: #000000;
}