* {
    font-family: arial;
}

h2 {
    text-align: center;
}

/*Unvisited Link*/
a:link {
    text-decoration: none;
}

/*Hovered link*/
a:hover {
    color: orangered;
}

/*Active link*/
a:active {
    color:lawngreen;
}

/*Visited Link*/
a:visited {
    color: red;
}

/*Checked*/
input[type="checkbox"]:checked {
    outline: 2px solid blue;
}

/*Disabled*/
input[type="text"]:disabled {
    background-color: lightgray;
}

/*FOCUS*/
#cool:focus {
    background-color: aqua;
}

/*Nth child*/
p:nth-child(3) {
    color: orangered;
}