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  %button.pulse-button &plus;


                @import compass

$blue: #5a99d4
$bluergb: 90, 153, 212
body, html
  height: 100%
  background: #f0f0f0

  width: 200px
  height: 100%
  margin: 0 auto 0

  @include transform(translate3d(0,0,0))
  position: relative
  top: 50%
  left: 50%
  margin-left: -20px
  margin-top: -20px
  display: block
  width: 36px
  height: 36px
  padding-bottom: 8px
    size: 1.3em
    weight: bold
  color: #fff
  border: none
  box-shadow: 0 0 0 0 rgba(#F0F0F0, 1), 0 0 0 0 rgba($blue, 0.7)
  border-radius: 100%
  v-align: middle
  background: $blue
  cursor: pointer 
  transform: translate3d(0,0,0)
  animation: pulse 1.25s infinite cubic-bezier( 0.66, 0.33, 0, 1)
    animation-play-state: paused 

@keyframes pulse
    box-shadow: 0 0 0 12px transparent, 0 0 0 24px rgba( $blue,  0)