I've made a social media icon list for my webpage but I don't know how to insert a link in them so they take you somewhere when clicking... I've tried using the "a" tag but it's not working: 

```
<div class="leftside">
    <ul class="socialmediaicons">
      <li><a href="https://www.facebook.com/EnUnChasquido"></a><i class="fa 
fa-facebook"></i></li>
      <li><i class="fa fa-instagram"></i></li>
      <li><i class="fa fa-twitter"></i></li>
      <li><i class="fa fa-youtube"></i></li>
    </ul>
  </div>

```

I've only tried on the facebook icon and it doesn't work, what am doing wrong?