<!DOCTYPE html>
<html>
  <head>
    <title></title>
    <link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
  </head>
  <body>
  <ul>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-home" aria-hidden="true"></i>
        </div>
      </label>
    </li>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-phone" aria-hidden="true"></i>
        </div>
      </label>
    </li>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-plane" aria-hidden="true"></i>
        </div>
      </label>
    </li>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-snowflake-o" aria-hidden="true"></i>
        </div>
      </label>
    </li>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-battery-full" aria-hidden="true"></i>
        </div>
      </label>
    </li>
    <li>
      <label>
        <input type="checkbox" name="">
        <div class="icon-box">
          <i class="fa fa-code" aria-hidden="true"></i>
        </div>
      </label>
    </li>
  </ul>
    
     <!--   Social Connections -->
  <div class="social-icons">
    <a class="social-icon social-icon--codepen" href="https://codepen.io/braydoncoyer" target="_blank">
      <i class="fa fa-codepen"></i>
      <div class="tooltip">Codepen</div>
    </a>
    <a class="social-icon social-icon--twitter" href="https://twitter.com/BraydonCoyer" target="_blank">
      <i class="fa fa-twitter"></i>
      <div class="tooltip">Twitter</div>
    </a>
  </div>
</body>
</html>
* 
{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height:100vh;
  background: #ebf5fc;
}

ul {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  border-radius: 10px;
  padding: 20px;
  width: 240px;
  background: #ebf5fc;
  box-shadow: -2px -2px 5px rgba(255, 255, 255, 1),
              3px 3px 5px rgba(0, 0, 0, 0.1);
  
  
  & li {
    position: relative;
    list-style: none;
    text-align: center;
    margin: 15px;
    
    & label {
      position: relative; 
      cursor: pointer;
      
      & input[type="checkbox"] {
        position: absolute;
        opacity: 0;
      }
      
      & :checked ~ .icon-box {
        box-shadow: inset -2px -2px 5px rgba(255, 255, 255, 1),
              inset 3px 3px 5px rgba(0, 0, 0, 0.1);
        
        & .fa {
          transform: scale(0.95);
        }
      }
      
      & .icon-box {
        width: 60px;
        height: 60px;
        background: #ebf5fc;
        display: flex;
        justify-content: center;
        align-items: center;
        box-shadow: -2px -2px 5px rgba(255, 255, 255, 1),
              3px 3px 5px rgba(0, 0, 0, 0.1);
        border-radius: 10px;
        
        & .fa {
          font-size: 30px;
          color: #6a9bd8;
        }
        
      }
    }
  }
}


/* --------Social Icons-------- */

/* Color Variables */
$color-codepen: #000;
$color-twitter: #2b97f1;
/* Social Icon Mixin */
@mixin social-icon($color) {
  background: $color;
  color: #fff;

  .tooltip {
    background: $color;
    color: currentColor;

    &:after {
      border-top-color: $color;
    }
  }
}

.social-icons {
  display: flex;
  position: absolute;
  bottom: 25px;
  right: 25px;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 40px;
  height: 40px;
  margin: 0 0.7rem;
  border-radius: 50%;
  cursor: pointer;
  font-family: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  font-size: 1.5rem;
  text-decoration: none;
  transition: all 0.15s ease;

  &:hover {
    color: #fff;

    .tooltip {
      visibility: visible;
      opacity: 1;
      transform: translate(-50%, -150%);
    }
  }
    
  &:active {
    box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.5) inset;
  }
  
  &--twitter { @include social-icon($color-twitter); }
  &--codepen { @include social-icon($color-codepen); }
  
  i {
    position: relative;
    top: 1px;
  }
}

/* Tooltips */
.tooltip {
  display: block;
  position: absolute;
  top: 0;
  left: 50%;
  padding: 0.4rem 0.6rem;
  border-radius: 40px;
  font-size: 0.4rem;
  font-weight: bold;
  opacity: 0;
  pointer-events: none;
  text-transform: uppercase;
  transform: translate(-50%, -100%);
  transition: all 0.3s ease;
  z-index: 1;
  
  &:after {
    display: block;
    position: absolute;
    bottom: 1px;
    left: 50%;
    width: 0;
    height: 0;
    content: "";
    border: solid;
    border-width: 10px 10px 0 10px;
    border-color: transparent;
    transform: translate(-50%, 100%);
  }
}
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