nav ul li, nav ul{
display: block;
list-style: none;
margin: 0px;
padding: 0px;
}

nav ul{
border: dotted black;
width: 180px;
background-color: white;
padding: 2px 2px 2px 3px;
}

nav ul li{
    border-bottom: dotted black;
}

nav ul li a:link{
    text-decoration: none;
    width: 170px;
    background-color: black;
    display: block;
    padding: 7px;
    font-weight: bold;
    /*border-left: 10px solid grey;*/
    color: white;
}

nav ul li a:visited{
    text-decoration: none;
    width: 170px;
    background-color: black;
    display: block;
    padding: 7px;
    font-weight: bold;
    /*border-left: 10px solid grey;*/
    color: white;
}


nav ul li a:hover{
    background-color: white;
    color: black;
    width: 160px;
    border-left: 20px solid green;
}

body {
    font-family: 'Courier New', Courier, monospace;
  }