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HTML

              
                form
  fieldset
    each val, i in ['Off', 'Control', 'Automatic', 'Manual']
      - var checked = i === 0 ? {'checked' : 'checked'} : ''
        
      input(type='radio', name='option', id=`option-${i + 1}`)&attributes(checked)
      label(for=`option-${i + 1}`) #{val}
    .dial
              
            
!

CSS

              
                $dial-size: 20vmin
$stroke-width: 0.5vmin
$stroke-margin: 1vmin
$label-spacing: 8vmin
$font-size: 4vmin
$col-fg: #333
$col-bg: #f5f5f5

*,
*::before,
*::after
  box-sizing: border-box
  margin: 0
  padding: 0
  border: 0

body
  width: 100vw
  height: 100vh
  display: flex
  align-items: center
  justify-content: center
  background-color: $col-bg
  color: $col-fg
  font:
    family: sans-serif
    size: $font-size
    weight: 100
  line-height: 1
  
fieldset
  display: block
  width: $dial-size
  height: $dial-size
  position: relative

input,
label,
.dial
  position: absolute

// LABELS and STROKES
label
  width: $dial-size
  left: 35vmin
  white-space: nowrap
  
  &::after
    content: ''
    width: 8.25vmin
    height: $stroke-width
    margin-right: $stroke-margin
    position: absolute
    top: #{($font-size - $stroke-width) / 2}
    right: 100%
    border-radius: #{$stroke-width * 0.5}
    background-color: $col-fg
  
  &[for='option-1']
    top: #{$label-spacing}
    left: #{$dial-size * -1.75}
    text-align: right
    
    &::after
      width: #{$dial-size * 0.6}
      left: 100%
      margin-left: $stroke-margin
    
  &[for='option-2']
    top: #{$label-spacing * -1}
    
  &[for='option-3']
    top: $label-spacing
    
    &::after
      width: #{$dial-size * 0.6}
    
  &[for='option-4']
    top: #{$label-spacing * 3}
    
  &[for='option-2']::before,
  &[for='option-4']::before
    content: ''
    width: 11vmin
    height: $stroke-width
    position: absolute
    top: #{($font-size - $stroke-width) / 2}
    left: #{$dial-size * -1}
    background-color: $col-fg
    transform-origin: right center
    
  &[for='option-2']::before
    transform: rotate(-45deg)
    
  &[for='option-4']::before
    transform: rotate(45deg)
    
// DIAL
.dial
  width: $dial-size
  height: $dial-size
  position: relative
  z-index: -1
  border-radius: 50%
  background-color: $col-fg
  transition: transform 600ms ease-out
  
  &::after
    content: ''
    width: #{$dial-size * 0.4}
    height: $stroke-width
    position: absolute
    top: #{($dial-size - $stroke-width) / 2}
    left: $stroke-margin
    border-radius: #{$stroke-width * 0.5}
    background-color: white

// rotate dial
#option-1:checked ~ .dial
  transform: rotate(0deg)
  
#option-2:checked ~ .dial
  transform: rotate(135deg)
  
#option-3:checked ~ .dial
  transform: rotate(180deg)
  
#option-4:checked ~ .dial
  transform: rotate(225deg)

// allow dial to be clicked
input
  appearance: none
    
  &::after
    content: ''
    display: block
    width: 0vmin
    height: 0vmin
    position: absolute
    z-index: 1
  
  input:checked + label + &::after
    width: $dial-size
    height: $dial-size
    z-index: 2
  
#option-1::after
  width: $dial-size
  height: $dial-size
  z-index: 1

              
            
!

JS

              
                
              
            
!
999px

Console