*{
    font-family: Arial;
}

h2{
    text-align: center;
}

a:link{
    text-decoration: none;
}

a:hover{
    color: orangered;
}

a:active {
    color:lawngreen
}

a:visited {
    color: red;
}


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


input[type="text"]:disabled {
    background-color: lightgrey;
}

#cool:focus{
    background-color: aqua;
}


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