Try it Live

​x
 
<!DOCTYPE html>
<html>
 <head>
   <style>
     a:visited {
      color: red;
     }
   </style>
 </head>
 <body>
   <p><a href="#" target="_blank">A Link</a></p>
   <p>After visiting the link, the link color will be red</p>
 </body>
</html>
​