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              <div class="icon">
  <i></i>
  <span class="tap"></span>
</div>
            
          
!
            
              @import "nib"

$mainbg = #3F51B5
$mainc = white 

html, body
  height 100%
  overflow hidden

body
  background $mainbg

  .icon
    width 40px
    height 40px
    border-radius 100%
    position absolute
    top 50%
    left 50%
    cursor pointer
    margin -20px
    i
      width 2px
      height 14px
      background $mainbg
      display block
      transform rotate(-45deg)
      left 19px
      position absolute
      top 13px
      opacity 0
      transition all .6s ease
      &:after
        content''
        display block
        width 14px
        height 2px
        background $mainbg
        position absolute
        left -6px
        top 6px
    &:after
      content''
      display block
      width 10px
      height 10px
      border-radius 100%
      position absolute
      left 15px
      top 15px
      box-shadow 14px 0px 0px $mainc, -14px 0px 0px $mainc
      transition all .4s ease
      z-index -1
    &:before
      content''
      display block
      width 40px
      height 40px
      border-radius 100%
      transform scale(.25)
      background $mainc
      position absolute
      transition all .6s ease
  .icon.active
    &:before
      transform scale(1)
    &:after
      box-shadow 0px 0px 0px $mainc, 0px 0px 0px $mainc
      opacity 0.4
    i
      opacity 1
      transform rotate(45deg)

  .tap
    width 80px
    height 80px
    display block
    position absolute
    left -20px
    top -20px
    opacity 1
    transform scale(0)
    border-radius 100%
    background-color rgba($mainc, .6)
    &.active
      transition all .3s ease-out
      opacity 0
      transform scale(1)
            
          
!
            
              $(".icon").on 'tap', ->
  $(this).toggleClass 'active'
  $('.tap').addClass 'active'
  
$(".icon").bind 'transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd', ->
  $('.tap').removeClass 'active'
            
          
!
999px
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