div.menu_ngang_duoi
{
	clear:left;
	height:25px;
	width:990px;
	background:#6767f8
}
div.menu_ngang_duoi a
{
	margin-right:10px;
	color:white;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	font-weight:bold;
}
div.menu_ngang_duoi a:hover
{
	text-decoration: underline;
}