body {
    font-family: serif;
 
    /* pt is absolute unit commonly used in print designs */
    font-size: 12pt;
}
a:after {
    /* Content is used to display (url) after every anchor (a) tag */
    /*
       Its value can be broken in 3 parts:
       " (" prints the opening parathesis with a space before it
       attr(href) gets the href value of 'a' tag
       ") " prints the closing parathesis with a space after it
    */
    content: " (" attr(href) ") ";
}