nav a:link{
    color:green;
    text-decoration: none;
}
nav a:visited{
    color: red; 
}
nav a:hover{
    color:darkmagenta; 
    text-decoration:underline;
    font-size: 20px;
}
nav a:active{
    color:yellow; 
}
ul li:first-child{
    color: rgb(195, 0, 255);        
    font-weight: bold;  
}
ul li:last-child{
    text-decoration: underline;
}
ul li:nth-child(even){
    background-color:lightgray;
}
ul li:nth-child(3){
    color:palevioletred;
}
ol li:nth-child(odd){
    color:blueviolet;
}
ol li:nth-child(2) {
    font-size: 20px;
}
ol li:last-child{
    background-color: gainsboro;
}
body{
    background-color:silver;
}