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HTML

              
                %ul
  -(1..90).each do
    %li
              
            
!

CSS

              
                body
  background: #212121

ul
  width: 100%
  height: 100%
  margin: 0 auto
  padding: 0
  list-style-type: none
  
li
  border-radius: 500px
  border-width: 1px 0 0
  border-style: solid
  border-color: #fff
  outline: 1px solid rgba(255,0,255,.1)
  display: block
  position: absolute
  width: 200px
  height: 400px
  top: 50%
  left: 50%
  margin: -200px 0 0 -100px

@for $i from 1 through 90
  li:nth-child(#{$i})
    transform: rotate($i*4+deg)
    animation: rot-#{$i} 3000s infinite
  
  @keyframes rot-#{$i}
    100%
      transform: rotate($i*360deg)
              
            
!

JS

              
                // http://jezenthomas.com/spirograph/
              
            
!
999px

Console