body {
 background-image: url("tt.png");
 background-color: #cccccc;
}
nav a {
	
	font-weight: bold;
	text-decoration: none;
	padding: 0 1.5em;
	padding-top: 10px;
	padding-bottom: 10px;

}
nav a:hover {
	color: #333333;
	background-color: #CCCCCC;
}