#about{
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 180px;
}
#product{
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 170px;
}
#service{
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 150px;
}
#news{
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 170px;
}
#invest {
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 180px;
	}
#envir {
	position:absolute;
	z-index:1;
	visibility: hidden;
	width: 250px;
	}