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JavaScript

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HTML

              
                <a href="#" class="translucent">
  <div>Button</div> 
</a>
<svg>
  <filter id="blur">
    <feGaussianBlur stdDeviation="5" />
  </filter>
</svg>
<!--
Credit Yosemite Wallpaper
Link - right bottom
-->
<a href="http://www.schieb.de/728109/neue-hintergrundbilder-von-osx-10-10-yosemite-jetzt-laden" class="credit">Yosemite Wallpaper</a>
              
            
!

CSS

              
                @import "nib"

body
  background url('http://img.schieb.de/wp-content/uploads/2014/08/osx-yosemite-wallpaper-sunset.jpg') no-repeat 50% 50% fixed
  background-size cover
  font 14px/1.4 Helvetica, Arial, sans-serif
  overflow hidden

.translucent
  width 400px
  position absolute
  display block
  line-height 120px
  top 50%
  left 50%
  background inherit
  border-radius 60px
  overflow hidden
  color #08c
  margin -60px -200px
  text-decoration none
  font-size 40px
  visibility hidden
  &:before
    visibility visible
    content ''
    position absolute
    width 110%
    height 110%
    top -5%
    bottom -5%
    background inherit
    -webkit-filter url('#blur') saturate(2)
    -moz-filter url('#blur')
    filter url('#blur')
  div
    background rgba(235,235,235,0.6)
    text-align center
    position relative
    display block
    visibility visible
    transition background .3s ease
    &:hover
      background rgba(235,235,235,0.54)

.credit
  position absolute
  bottom 15px
  right 15px
  color white
  display inline-block
  text-decoration none
  text-shadow 0px 1px 1px rgba(#000,.2)
  &:hover
    color rgba(235,235,235,0.6)
  
              
            
!

JS

              
                $(".translucent").draggable();
              
            
!
999px

Console