Question: I put this in the following file: index.html

```
<ul class="youtube">
    <li class="gamerscafe"><a href="https://www.youtube.com/channel/UClExmFafx9vTZxDHPwg74Pg"></a></li>
    <li class="destiny"><a href="https://www.youtube.com/channel/UCyrifIvvkvGj1c-ltnbop4A"></a></li>
    <li class="halo"><a href="https://www.youtube.com/channel/UCjdkHFov_Tqb9mzrEXStrog"></a></li>
    <li class="assassins"><a href="https://www.youtube.com/channel/UCSFscOh0tN1hsz-7UMIVYkQ"></a></li>
    <li class="gearsofwar"><a href="https://www.youtube.com/channel/UC26Tt6oTOS4UpdGzAOVMZKA"></a></li>
    <li class="armyoftwo"><a href="https://www.youtube.com/channel/UCqvhFvrTYsv3VGg9j9elNtA"></a></li>
</ul>

```

And i put this in the style.css sheet...

```
ul.youtube
{
width: 650px;
margin: 0px auto 0;
height: 10px;
}

ul.youtube li{
float: left;
background: url(../images/youtube.png) left top no-repeat;
position: relative;
height: 20px;
margin-right: 70px;
}

ul.youtube li a{
display: block;
width: 18px;
height: 20px;
}

```

However when i hover over the images the link doesn't work is there something i am missing ?

Answer: 
Your `a` anchors do not include any text/elements to be clicked on.

You need to insert something inside your `a` tags, for example images:

```
<a href="http://URL/TO/DESTINATION">
    <img src="http://URL/TO/IMAGE.png" />
</a>

```

Or, if you just want so span a clickable area, define some element with dimensions inside

```
<a href="http://URL/TO/DESTINATION">
    <div style="height: 100px; width: 300px;"></div>
</a>

```

But the main problem is, that your anchors have no content you could click on.

EDIT: I suppose you could edit the dimensions of the `a` directly as well instead of the div. The `a` would need a `display: block;` or `display:inline-block` for that though
Like Felk said.

You have your `<a>` tag but it doesn't have anything inside.

In order to make the images links you would have to put them inside the `<a>` tag; like so.

```
<li class="gamerscafe"><a href="https://www.youtube.com/channel/UClExmFafx9vTZxDHPwg74Pg"><img src=""></img></a></li>
                                                                                                   //^ image code here

```