Here we created 2 different classes (named highlight and highlight2)  

a.hihglight1{background-color: rgb(255, 255, 0);}
a.hihglight2{background-color: rgb(0, 255, 0);}

To produce these different links appearance:

Link1: This will be highlighted

Link2: This will not be highlighted

Link3: This will be highlighted, too

The html code for the links is as follows:

<a class="highlight1" HREF="index.html">This will be highlighted</a>
<a HREF="index.html">This will not be highlighted</a>
<a class="highlight2" HREF="index.html">This will not be highlighted, too</a>

The first link uses the highlight1 class. 
The second link is a regular link, it will not be highlighted.  
The third link uses the highlight2 class.  


(C). F. Permadi