CodePen

HTML

            
              <div id="buttons">
<div class="facebook button">
	<i class="icon-facebook"></i>
	<div class="social-container fb">
		<div class="slide">
			<iframe src="//www.facebook.com/plugins/like.php?href=http%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2Freference%2Fplugins%2Flike&amp;send=false&amp;layout=button_count&amp;width=90&amp;show_faces=false&amp;font&amp;colorscheme=light&amp;action=like&amp;height=21&amp;appId=568581339861351" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:81px; height:21px;" allowtransparency="true">
			</iframe>
		</div>
		 Facebook
	</div>
</div>
<div class="twitter button">
	<i class="icon-twitter"></i>
	<div class="social-container tw">
		<div class="slide">
			<a href="https://twitter.com/share" class="twitter-share-button" data-via="mariuCSS">
			Tweet </a>
			<script>
    !function(d,s,id){
      var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';
      if(!d.getElementById(id)){
        js=d.createElement(s);
        js.id=id;
        js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');
  </script>
		</div>
		 Twitter
	</div>
</div>
<div class="google button">
	<i class="icon-google-plus"></i>
	<div class="social-container tw">
		<div class="slide">
			<!-- Place this tag where you want the +1 button to render. -->
			<div class="g-plusone" data-size="medium">
			</div>
			<!-- Place this tag after the last +1 button tag. -->
			<script type="text/javascript">
    (function() {
      var po = document.createElement('script');
      po.type = 'text/javascript';
      po.async = true;
      po.src = 'https://apis.google.com/js/plusone.js';
      var s = document.getElementsByTagName('script')[0];
      s.parentNode.insertBefore(po, s);
    }
    )();
  </script>
		</div>
		 Google+
	</div>
</div>
<div class="linkedin button">
	<i class="icon-linkedin"></i>
	<div class="social-container tw">
		<div class="slide">
			<script src="//platform.linkedin.com/in.js" type="text/javascript">
 lang: en_US
			</script>
			<script type="IN/Share"></script>
		</div>
		 LinkedIN
	</div>
</div>
</div>

<p class="credit">Original idea by <a target="_blank" href="http://dribbble.com/shots/801409-I-Absolve-You-From-Your-Sins?list=searches&tag=social_buttons">Paul Flavius Nechita</a></p>
            
          
!

CSS

            
              @import url(http://fonts.googleapis.com/css?family=Open+Sans);

@import "//netdna.bootstrapcdn.com/font-awesome/3.0/css/font-awesome.css";

html {
    background: #f1f1f1;
}

#buttons {
    width: 475px;
    overflow: hidden;
    margin: 70px auto 0;
}

.button {
    float: left;
    margin-right: 10px;
    width: 110px;
    background: #eaeaea;
    border: 1px solid #cbcbcb;
    border-radius: 3px;
    -o-border-radius: 3px;
    -ms-border-radius: 3px;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    box-shadow: inset 0 1px 0px #fdfdfd;
    padding: 15px 5px 5px;
    box-sizing: border-box;
}

.button i {
    background: #c5c5c5;
    color: #eaeaea;
    text-align: center;
    line-height: 40px;
    font-size: 18px;
    width: 40px;
    height: 40px;
    display: block;
    margin: 0 auto 10px;
    border-radius: 50%;
    -o-border-radius: 50%;
    -ms-border-radius: 50%;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
}

.social-container {
    text-align: center;
    text-transform: uppercase;
    font-size: 12px;
    color: #656565;
    line-height: 54px;
    font-family: Open Sans;
    background: #d8d8d8;
    width: 100%;
    height: 45px;
    box-shadow: inset 0 -2px 4px #c7c7c7;
    border-radius: 3px;
    -o-border-radius: 3px;
    -ms-border-radius: 3px;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    position: relative;
    overflow: hidden;
}

.slide, .button i {
    -webkit-transition: all 0.2s ease-in-out;
    -moz-transition: all 0.2s ease-in-out;
    -ms-transition: all 0.2s ease-in-out;
    -o-transition: all 0.2s ease-in-out;
}

.slide {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
    border-radius: 0 0 22px 22px;
    -o-border-radius: 0 0 22px 22px;
    -ms-border-radius: 0 0 22px 22px;
    -moz-border-radius: 0 0 22px 22px;
    -webkit-border-radius: 0 0 22px 22px;
 /* top fix */
    transition: all 0.2s ease-in-out;
    position: absolute;
    height: 45px;
    width: 100%;
    top: -35px;
}

.slide::after {
    content: "";
    display: block;
    position: absolute;
    width: 100%;
    height: 10px;
    box-shadow: inset 0 1px 0px #fdfdfd, 0 3px 0px #cdcdcd;
    border-radius: 3px;
    -o-border-radius: 3px;
    -ms-border-radius: 3px;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    background: #eaeaea;
    border: 1px solid #cbcbcb;
    box-sizing: border-box;
    bottom: 0;
}

.button:hover .slide {
    top: 0;
    border-radius: 3px;
}

.linkedin .IN-widget, .button iframe, .google #___plusone_0 {
    top: -2px;
    position: relative;
}

.twitter iframe {
    width: 79px !important;
}

.google #___plusone_0 {
    width: 60px !important;
}

.button.facebook:hover i, .facebook .slide {
    background: #305c99;
    color: white;
}

.button.twitter:hover i, .twitter .slide {
    background: #00cdff;
    color: white;
}

.button.google:hover i, .google .slide {
    background: #d24228;
    color: white;
}

.button.linkedin:hover i, .linkedin .slide {
    background: #007bb6;
    color: white;
}

.button.linkedin {
    margin-right: 0;
}

.credit {
    padding-left: 10px;
    font-size: 14px;
    color: #172b36;
    position: absolute;
    bottom: 0;
    text-align: center;
    font-family: Open Sans;
}

.credit a {
    border-bottom: 2px solid #dc4106;
    text-decoration: none;
    padding: 0 0 2px;
    color: #172b36;
}
            
          
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