a:hover {
    color: #cc0000;
    font-weight: bold;
    text-decoration: none;
}
// hover => like zoom on the html 'a' when you select it
//visited => if you already visit the site so u can apply another css code

p:first-child{
    font-family:cursive;
    }
//first-child it means that the code css will apply on the first paragraph in the code (we use it only with the first one )

p:nth-child(variale){
color:#00FF00;
}
//we can use with any position