<a href="#" class="icon-button twitter"><i class="icon-twitter"></i><span></span></a>
<a href="#" class="icon-button facebook"><i class="icon-facebook"></i><span></span></a>
<a href="#" class="icon-button google-plus"><i class="icon-google-plus"></i><span></span></a>
<a href="#" class="icon-button youtube"><i class="fa fa-youtube"></i><span></span></a>
<a href="#" class="icon-button pinterest"><i class="fa fa-pinterest"></i><span></span></a>
html {
	font-size: 2.5em;
}
body {
	background-color: #fff;
	padding: 25px;
	text-align: center;
}

/* Wrapper */
.icon-button {
	background-color: white;
	border-radius: 2.6rem;
	cursor: pointer;
	display: inline-block;
	font-size: 1.3rem;
	height: 2.6rem;
	line-height: 2.6rem;
	margin: 0 5px;
	position: relative;
	text-align: center;
	-webkit-user-select: none;
	   -moz-user-select: none;
	    -ms-user-select: none;
	        user-select: none;
	width: 2.6rem;
}

/* Circle */
.icon-button span {
	border-radius: 0;
	display: block;
	height: 0;
	left: 50%;
	margin: 0;
	position: absolute;
	top: 50%;
	-webkit-transition: all 0.3s;
	   -moz-transition: all 0.3s;
	     -o-transition: all 0.3s;
	        transition: all 0.3s;
	width: 0;
}
.icon-button:hover span {
	width: 2.6rem;
	height: 2.6rem;
	border-radius: 2.6rem;
	margin: -1.3rem;
}

/* Icons */
.icon-button i {
	background: none;
	color: white;
	height: 2.6rem;
	left: 0;
	line-height: 2.6rem;
	position: absolute;
	top: 0;
	-webkit-transition: all 0.3s;
	   -moz-transition: all 0.3s;
	     -o-transition: all 0.3s;
	        transition: all 0.3s;
	width: 2.6rem;
	z-index: 10;
}





.twitter span {
	background-color: #4099ff;
}
.facebook span {
	background-color: #3B5998;
}
.google-plus span {
	background-color: #db5a3c;
}
.tumblr span {
	background-color: #34526f;
}
.instagram span {
	background-color: #517fa4;
}
.youtube span {
	background-color: #bb0000;
}
.pinterest span {
	background-color: #cb2027;
}



.icon-button .icon-twitter {
	color: #4099ff;
}
.icon-button .icon-facebook {
	color: #3B5998;
}
.icon-button .fa-tumblr {
	color: #34526f;
}
.icon-button .icon-google-plus {
	color: #db5a3c;
}
.icon-button .fa-instagram {
	color: #517fa4;
}
.icon-button .fa-youtube {
	color: #bb0000;
}
.icon-button .fa-pinterest {
	color: #cb2027;
}




.icon-button:hover .icon-twitter,
.icon-button:hover .icon-facebook,
.icon-button:hover .icon-google-plus,
.icon-button:hover .fa-tumblr,
.icon-button:hover .fa-instagram,
.icon-button:hover .fa-youtube,
.icon-button:hover .fa-pinterest {
	color: white;
}

@media all and (max-width: 680px) {
  .icon-button {
    border-radius: 1.6rem;
    font-size: 0.8rem;
    height: 1.6rem;
    line-height: 1.6rem;
    width: 1.6rem;
  }

  .icon-button:hover span {
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 1.6rem;
    margin: -0.8rem;
  }

  /* Icons */
  .icon-button i {
	  height: 1.6rem;
	  line-height: 1.6rem;
	  width: 1.6rem;
  }
  body {

	  padding: 10px;
  }
  .pinterest {
   display: none; 
  }

}
// Change the HTML font size for bigger or smaller icons.

//Check out www.joevengels.de

//Also check out my facebook, youtube and twitter account
//Facebook: facebook.com/joe.vengels
//Twitter: twitter.com/jbvgaming
//Youtube: youtube.com/jbvgaming

External CSS

  1. https://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css
  2. https://netdna.bootstrapcdn.com/font-awesome/3.1.1/css/font-awesome.css

External JavaScript

This Pen doesn't use any external JavaScript resources.