a{
    text-decoration: none;
}

a:link{
    color:red;
}

a:visited{
    color:aquamarine;
}

a:hover{
    color:lightgreen;
}

a:active{
    color:pink;
}

ul{
    list-style-type: none;
}

.especial li:nth-child(even){
    background-color: red;
}

.especial li:nth-child(odd){
    background: blue;
}

a:focus{
    background: black;
}