ss1.css

div#header 
{
    background-color: darkgoldenrod;
    text-align: -webkit-center;
    color: beige;
    padding: 1;
}
ul
{
list-style-type:none;
margin: 0;
padding :0;
overflow:hidden;
background-color:#333;
position:none;
top:0%;
width:100%
}
li
{
dispaly:inline;
float:left;
border-right: 1px solid #bbb;
}
li:last-child
{
float:left;
border-right:none;
}
li a{
display:block;
color:white;
text-align:center;
padding:14px 16px;
text-decoration:;
}
li a:hover
{
a:active
{
background-color:#111
};
background-color:#4CAF50;
}

	p.one 
{
border-style:solid;
border-width:5px;
}
<a href="Menu.php">Menu</a>
margin:0;
	padding:0px;
	list-style:none; 
	overflow:hidden;
	background-color:#333;
	top:10%;
	display:block;
	display:block;
	width:100%
#HDropdown-orange-classic 
	{
list-style-type:none;
margin: 0;
padding :0;
overflow:hidden;
background-color:#333;
position:none;
top:0%;
width:100%
repeat-x top;
border-width:1px 1px 1px 0; 
position:relative;
	}