body{
background: blue;
 
}
h1{
	color: black;
}

nav{
	width: 300px;
}
ul{
	list-style-type: none;
	margin: 0px;
	padding: 0px;
	border-top-width: 4px;
	border-top-style: solid;
	border-top-color:red;
	border-right-style: solid;
	border-right-width: 4px;
	border-right-color: red;
	border-left-width: 4px;
	border-left-style: solid;
	border-left-color:red;
}
a{
	background-color: blue;
	color: black;
	text-decoration: none;
	font-family: Helvetica, Arial, "Comic Sans";
	font-size: 2em;
	display: block;
	border-bottom-width: 4px;
	border-bottom-style: solid;
	border-bottom-color: red;
	padding: 15px;
}
a:hover{
	background: white;
	border-right-color: black;
	border-right-width: 17px;
	border-right-style: solid;
}