<div class="share-buttons">
  <div class="share-button">
    <div class="share-button-secondary">
      <div class="share-button-secondary-content">
        share on twitter
      </div>
    </div>
    <div class="share-button-primary">
      <i class="share-button-icon fa fa-twitter"></i>
    </div>
  </div>

  <div class="share-button">
    <div class="share-button-secondary">
      <div class="share-button-secondary-content">
        share on facebook
      </div>
    </div>
    <div class="share-button-primary">
      <i class="share-button-icon fa fa-facebook"></i>
    </div>
  </div>

  <div class="share-button">
    <div class="share-button-secondary">
      <div class="share-button-secondary-content">
        pin on pinterest
      </div>
    </div>
    <div class="share-button-primary">
      <i class="share-button-icon fa fa-pinterest"></i>
    </div>
  </div>
  
  <div class="share-button">
    <div class="share-button-secondary">
      <div class="share-button-secondary-content">
        share on tumblr
      </div>
    </div>
    <div class="share-button-primary">
      <i class="share-button-icon fa fa-tumblr"></i>
    </div>
  </div>
  
  <div class="share-button">
    <div class="share-button-secondary">
      <div class="share-button-secondary-content">
        share on google+
      </div>
    </div>
    <div class="share-button-primary">
      <i class="share-button-icon fa fa-google-plus"></i>
    </div>
  </div>
</div>

body {
  background: linear-gradient(90deg, #FF8008 10%, #FFC837 90%);
  padding: 2em;
  text-align: center;
}

* {
  box-sizing: border-box;
}

$button-height: 30px;
$box-width: 300px;
$box-height: 212px;

.share-buttons {
  position: absolute;
  width: $box-width;
  height: $box-height;
  padding-left: ($box-width / 2) - ($button-height / 2);
  top: 50%;
  left: 50%;
  margin-left: -($box-width / 2);
  margin-top: -($box-height / 2);
  
  .share-button {
    float: left;
    margin-top: 15px;
    
    &:first-child {
      margin-top: 0;
    }
    
    &:after {
      clear: both;
      display: table;
    }
  }
}

.share-button {
  display: block;
  position: relative;
  height: $button-height;
  
  &:hover {
    cursor: pointer;
    
    .share-button-primary {
      box-shadow: 1px 0 0 0 rgba(0, 0, 0, .1);
    }
    
    .share-button-secondary-content {
      transform: translate3d(0, 0, 0);
    }
  }
}

.share-button-primary {
  position: absolute;
  background: #fff;
  width: $button-height;
  height: $button-height;
  border-radius: ($button-height / 2);
  left: 0;
  top: 50%;
  margin-top: -($button-height / 2);
}

.share-button-icon {
  display: block;
  color: #242424;
  position: absolute;
  width: $button-height;
  line-height: $button-height;
  font-size: 16px;
  margin-top: 1px;
}

.share-button-secondary {
  overflow: hidden;
  margin-left: ($button-height / 2);
  height: $button-height;
}

.share-button-secondary-content {
  font-family: sans-serif;
  font-size: .75em;
  background: #fff;
  display: block;
  height: $button-height;
  text-align: left;
  padding-left: ($button-height * .8);
  padding-right: ($button-height * .6);
  line-height: $button-height;
  color: #242424;
  border-radius: 0 ($button-height / 2) ($button-height / 2) 0;
  transform: translate3d(-100%, 0, 0);
  transition: transform 175ms ease;
}