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HTML

              
                #sun
  #mercury
  #venus
  #earth
  #mars
  #jupiter
  #saturn
  #uranus
  #neptune

#pluto-foreveralone
              
            
!

CSS

              
                @import compass

// Adjustments
$scale-factor: 1
$radii-factor: 1
$distance-factor: 1
$time-factor: 1

// From codepen.io/rileyjshaw/pen/JDILk
@function scale-list($list, $factor)
  $first-item: nth($list, 1)
  $blank: $first-item * $factor
  @each $i in reject($list, $first-item)
    $blank: append($blank, $i*$factor)
  @return $blank

// Variables; lists in order of distance from sun
$planets: sun mercury venus earth mars jupiter saturn uranus neptune
$radii: 60px 7px 18px 19px 10px 214px 180px 76px 74px
$distances: 0 190px 360px 500px 760px 2590px 4750px 9540px 15000px
$periods: 0 8.8s 22.5s 36.5s 68.7s 433.2s 1076s 3070s 6020s 9060s
$light-colors: #e84b1e #2ecc71 #e67e22 #80ccec #dc573a #e74c3c #ede8b3 #22afd2 #3498db
$dark-colors: #be4128 #27ae60 #d35400 #21b770 #b24e3b #c0392b #f7dca8 #24758c #2980b9
$black: #281e21

$radii: scale-list($radii, $scale-factor*$radii-factor)
$distances: scale-list($distances, $scale-factor*$distance-factor)
$periods: scale-list($periods, $time-factor)

$noise: url("data:image/png;base64,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")

=planet($radius, $fg, $bg)
  height: 2 * $radius
  width: 2 * $radius
  margin: -$radius
  background: $fg $noise
  +border-radius(50%)
  @if $radius != nth($radii, 1)
    +box-shadow(-$radius/3 #{-$radius/3} $radius/2 rgba($bg, .8) inset, $radius/2 $radius/2 rgba($black, .2))
  @else
    +box-shadow(-$radius/3 #{-$radius/3} $radius/3 rgba($bg, .8) inset)
  
html
  background: $black
  height: 100%
  width: 100%
  overflow: hidden

#sun
  left: 50%
  background-size: 250px
  -webkit-animation: spin 6s linear infinite
  animation: spin 6s linear infinite

  &:before
    content: 'Subtle planet rotation'
    top: -84px
  &:after
    content: 'Using a noisy data-uri'
    bottom: -84px
  &:before, &:after
    position: absolute
    left: -600px / 2 + nth($radii, 1)
    width: 600px
    font: 24px 'Limelight', sans-serif
    text-align: center
    color: rgba(#efd2ba, .3)

div
  content: ''
  position: absolute
  top: 50%
  
@for $i from 1 through length($planets)
  $p: nth($planets, $i)
  $r: nth($radii, $i)
  $d: nth($distances, $i)
  $t: nth($periods, $i)
  $cl: nth($light-colors, $i)
  $cd: nth($dark-colors, $i)
    
  ##{$p}
    -webkit-animation: orbit-#{$p} $t ease-in-out infinite, spin 6s linear infinite
    animation: orbit-#{$p} $t ease-in-out infinite, spin 6s linear infinite
    +planet($r, $cl, $cd)

  @-webkit-keyframes orbit-#{$p}
    0%
      z-index: pow(10, $i)
      left: -$d
    25%
      height: $r * 3
      width: $r * 3
    50%
      z-index: 0
      left: 120px + $d
    75%
      height: $r
      width: $r
    99.9%
      z-index: -#{pow(10, $i)}
      left: -$d
    100%
      z-index: pow(10, $i)
      left: -$d
    
  @keyframes orbit-#{$p}
    0%
      z-index: pow(10, $i)
      left: -$d
    25%
      height: $r * 3
      width: $r * 3
    50%
      z-index: 0
      left: 120px + $d
    75%
      height: $r
      width: $r
    99.9%
      z-index: -#{pow(10, $i)}
      left: -$d
    100%
      z-index: pow(10, $i)
      left: -$d
      
@-webkit-keyframes spin
  from
    background-position-x: 0px
  to
    background-position-x: 250px
    
@keyframes spin
  from
    background-position-x: 0px
  to
    background-position-x: 250px
    
#pluto-foreveralone
  position: absolute
  top: auto
  bottom: 6px
  right: 6px
  height: 4px
  width: 4px
  background: #7faad7
  +border-radius(2px)
  
  &:before
    content: 'whatever, screw you guys..'
    position: relative
    top: -36px
    left: -134px
    display: block
    width: 150px
    height: 26px
    font: 10px/26px sans-serif
    text-align: center
    color: scale-lightness($black, -10%)
    background: scale-lightness($black, 10%)
    +border-radius(4px)
    
  &:after 
    content: ''
    position: absolute
    border-style: solid
    border-width: 5px 5px 0
    border-color: scale-lightness($black, 10%) transparent
    display: block
    width: 0
    z-index: 1
    top: -10px
    left: -4px

              
            
!

JS

              
                
              
            
!
999px

Console