.pdfviewer {
	margin:1% 0;
	border:1px solid #aaa;
	height:1400px;
	width:990px;
}
.board_view .content table,
div.bbs-html .bbs-contents table {
	border-collapse: collapse;
	width: 100%;
	max-width: 100%;
}
.board_view .content table td,
.board_view .content table th,
div.bbs-html .bbs-contents table td,
div.bbs-html .bbs-contents table th {
	border: 1px solid #ddd;
	padding: 8px;
	min-width: 40px;
	min-height: 24px;
}
@media (max-width:767px){ 
	.pdfviewer { 
		height:350px;
	}
}