KODE CSS HOVER SOCIAL MEDIA

<div class="social-top">

    <ul>
        <li class="facebook"><a href="#self">F</a></li>
            <li class="twitter"><a href="#self">T</a></li>
                <li class="youtube"><a href="#self">Y</a></li>
    </ul>

</div>



.social-top {
   float: right;
 }

.social-top li {

display: inline-block;
width: 40px;
height: 40px;
background-color: #ccc;
border-radius: 150px;
}

.social-top li.facebook:hover {
background-color: #006;

}

.social-top li.twitter:hover {
   background-color: #060;

}

 .social-top li.youtube:hover {
  background-color: #600;

 }

.social-top li:hover a {
       color: #fff;
}

.social-top a {
 display: block;
   line-height: 40px;
   text-align: center;
   width: 100%;
  height: 100%;
 }

Untuk melihat demonya bisa disini?

Lihat Demo