#Nav {
position:absolute;
padding: 0;
margin:0;
list-style: none;
}

#Nav li {
width: 150px;
margin:0;
float: left;
padding:0;
text-align:center;

}
#Nav li a {
display: block;
color: black;
text-decoration: none;	
margin: 0; 
padding: 3.7px;

}
#Nav li a:hover,#Nav li a:active {
display: block;
color: white;
text-decoration: none;	
margin: 0; padding: 3.7px;
}
.sb_menu {
padding: 0;
margin: 0;
list-style: none;
display: none;
}

.sb_menu  li {
text-align:left;
background:skyblue;
}

.active
{
	background-color:orange;
}