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CSS

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HTML 

              
                <a class="twitter">
  <svg width="64px" height="64px" viewBox="0 0 64 64" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
	    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
	        <g id="icon-twitter" sketch:type="MSArtboardGroup" fill="#FF3B6B">
	            <path d="M51.1176471,17 C53.2247178,16.325 54.8511941,14.255 55.5294118,12.5 C53.6396796,12.995 51.4429935,13.88 49.6470588,14 C47.2324367,12.29 44.5685558,11 42.2941176,11 C35.9501175,11 31.356519,15.755 32,21.5 C31.356519,22.43 31.4508285,23.24 32,24.5 C23.0993587,23.57 15.5386379,19.355 9.94117647,12.5 C9.59858971,14.51 9.09367111,16.325 8.47058824,18.5 C9.09367111,21.95 10.9000609,25.19 14.3529412,27.5 C11.9766403,27.05 10.3922405,26.57 8.47058824,26 C9.00661617,31.04 12.5424973,35.33 17.2941176,36.5 C16.3743652,36.545 15.467543,36.665 14.3529412,36.5 C13.8744378,36.665 13.2316822,36.605 12.8823529,36.5 C13.9121616,40.7 17.700502,43.76 21.7058824,44 C18.6755173,46.685 14.2545776,48.38 9.94117647,48.5 C8.61777081,48.38 7.79945446,48.335 7,48.5 C11.5370129,51.245 16.9300659,53 23.1764706,53 C41.5956298,53 51.9130902,36.845 52.5882353,23 C51.9130902,22.37 51.898581,21.92 52.5882353,21.5 C53.8877862,19.97 55.625983,18.095 57,15.5 C55.1631409,16.82 53.1826412,17.39 51.1176471,17 Z"></path>
	        </g>
	    </g>
	</svg>
  <span>999 tweets</span>
</a>
!

CSS 

              
                @keyframes pop
  0%
    -ms-transform: scale(1)
    -webkit-transform: scale(1)
    transform: scale(1)

  50%
    -ms-transform: scale(1.2)
    -webkit-transform: scale(1.2)
    transform: scale(1.2)

  90%
    -ms-transform: scale(0.9)
    -webkit-transform: scale(0.9)
    transform: scale(0.9)

  100%
    -ms-transform: scale(1)
    -webkit-transform: scale(1)
    transform: scale(1)

@keyframes pulse
  50%
    -ms-transform: scale(1.2)
    -webkit-transform: scale(1.2)
    transform: scale(1.2)
    opacity: 1

  70%
    -ms-transform: scale(0.9)
    -webkit-transform: scale(0.9)
    transform: scale(0.9)
    opacity: 1

  100%
    -ms-transform: scale(1)
    -webkit-transform: scale(1)
    transform: scale(1)
    opacity: 1
  
$width: 158
$height: $width
$color: #FF3B6B

.twitter
  position: absolute
  display: flex
  flex-direction: column
  justify-content: center
  align-items: center
  top: 50%
  left: 50%
  margin-left: ($width / 2) * -1px
  margin-top: ($height / 2) * -1px
  width: $width * 1px
  height: $height * 1px
  text-align: center

  &:hover
    #icon-twitter
      fill: #fff

    span
      color: #fff
    
    #icon-twitter, span
      transform: translateY(-5px)
      
    &:before
      animation: pop .5s
      animation-fill-mode: forwards

    &:after
      animation: pulse .5s
      animation-fill-mode: forwards
  
  &:before, &:after
    content: ''
    top: 0
    left: 0
    width: $width * 1px
    height: $height * 1px
    position: absolute
    border: 1px solid $color
    border-radius: 100%

  &:after
    background-color: $color
    transform: scale(0.1)
    opacity: 0
  
  svg, span
    z-index: 1

  #icon-twitter
    transition: 0.5s

  span
    transition: 0.5s
    color: $color
    font-size: 20px
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif
!

JS
!
999px

Console