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HTML

              
                
<div class="burger-toggle">
  <input class="burger-toggle__checkbox" type="checkbox"/><svg
   class="worktop"
   viewBox="0 0 400 100"
   preserveAspectRatio="xMinYMin">
  <defs
     id="defs4">
    <pattern
       patternTransform="matrix(1.301894,-0.34884141,15.183253,56.664678,29.525874,0.55709196)"
       id="pattern5770"
       xlink:href="#Strips1_10" />
    <pattern
       patternUnits="userSpaceOnUse"
       width="11"
       height="1"
       patternTransform="translate(0,0) scale(10,10)"
       id="Strips1_10">
      <rect
         style="fill:black;stroke:none"
         x="0"
         y="-0.5"
         width="1"
         height="2"
         id="rect4943" />
    </pattern>
    <pattern
       patternTransform="matrix(9.6592583,-2.5881905,2.5881905,9.6592583,3.6640572e-6,-952.36206)"
       id="pattern5671"
       xlink:href="#Checkerboardwhite" />
    <pattern
       patternUnits="userSpaceOnUse"
       width="2"
       height="2"
       patternTransform="translate(0,0) scale(10,10)"
       id="Checkerboardwhite">
      <rect
         style="fill:white;stroke:none"
         x="0"
         y="0"
         width="1"
         height="1"
         id="rect4981" />
      <rect
         style="fill:white;stroke:none"
         x="1"
         y="1"
         width="1"
         height="1"
         id="rect4983" />
    </pattern>
  </defs>
  <g
     id="layer2">
    <rect
       y="0"
       x="0"
       height="100"
       width="400"
       id="rect5674"
       style="fill:#b2967a;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <rect
       style="opacity:0.3;fill:url(#pattern5770);fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="rect5676"
       width="400"
       height="100"
       x="0"
       y="0" />
  </g>
  <g
     transform="translate(0,-952.36209)"
     id="layer1">
    <path
       id="rect4178"
       transform="translate(0,952.36209)"
       d="M 0,0 0,100 120.8457,100 94.050781,0 0,0 Z"
       style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:0.59430015;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5663"
       transform="translate(0,952.36209)"
       d="M 0,0 0,100 120.8457,100 94.050781,0 0,0 Z"
       style="fill:url(#pattern5671);fill-opacity:1;stroke:none;stroke-width:0.59430015;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5991"
       transform="translate(0,952.36209)"
       d="m 244.83594,0 26.79297,100 128.32031,0 0,-100 -155.11328,0 z"
       style="opacity:1;fill:#666666;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
  </g>
  <g
     id="layer3">
    <circle
       r="50"
       cy="50"
       cx="50"
       id="path5775"
       style="opacity:1;fill:#bfbfbf;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
  </g>
  <g
     id="layer4">
    <path
       id="rect5780"
       d="M 268.41797,0 295.21484,100 400,100 400,0 268.41797,0 Z"
       style="fill:#333333;fill-opacity:1;stroke:none;stroke-width:0.69435036;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5791"
       d="m 306.11914,0 -21.35742,5.7226562 c -1.63527,0.4381717 -2.59833,2.1069048 -2.16016,3.7421876 0.43817,1.6352812 2.1069,2.6002832 3.74219,2.1621092 L 329.73242,0 306.11914,0 Z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5795"
       d="m 400,70.037109 -91.43945,24.503907 c -1.63528,0.438173 -2.60028,2.106905 -2.16211,3.742187 0.19641,0.733038 0.64745,1.319815 1.22461,1.716797 l 4.16601,0 L 400,76.367188 l 0,-6.330079 z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5805"
       d="M 400,85.904297 347.39648,100 371.00977,100 400,92.232422 l 0,-6.328125 z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5807"
       d="M 399.99987,54.171726 304.59313,79.73754 c -1.63527,0.438172 -2.59978,2.10715 -2.16161,3.742431 0.43817,1.635283 2.10967,2.599795 3.74495,2.161621 l 93.8234,-25.141561 0,-6.328296 z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5809"
       d="m 399.99987,38.30553 -99.37394,26.628826 c -1.63529,0.438175 -2.59727,2.10715 -2.1591,3.742433 0.43817,1.635282 2.10716,2.599795 3.74243,2.161621 l 97.79058,-26.204669 10e-6,-6.328297 z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5811"
       d="m 399.10846,22.744893 c -0.20301,0.01242 -0.4067,0.04371 -0.61111,0.09848 L 296.66127,50.131306 c -1.63528,0.438173 -2.59979,2.107155 -2.16162,3.742433 0.43817,1.635282 2.10716,2.599793 3.74244,2.161622 l 101.75776,-27.267775 1e-5,-5.931832 c -0.28852,-0.06939 -0.58565,-0.109562 -0.89141,-0.09091 z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <path
       id="rect5813"
       d="m 365.33008,0 -76.60156,20.525391 c -1.63529,0.438172 -2.60029,2.106906 -2.16211,3.742187 0.43817,1.635281 2.1069,2.600282 3.74218,2.16211 L 388.94727,0 365.33008,0 Z"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
    <rect
       transform="matrix(0.96592583,-0.25881905,0.25881905,0.96592583,0,0)"
       ry="3.0558977"
       y="109.87924"
       x="270.5213"
       height="6.1117954"
       width="111.54027"
       id="rect5815"
       style="opacity:1;fill:#4d4d4d;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
  </g>
</svg>
  <svg
  class="patty"
  preserveAspectRatio="xMinYMin"
  viewBox="0 0 70 70">
  <g
     id="g4827">
    <g
       transform="translate(-315,-15)"
       id="layer5">
      <circle
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         class="patty__meat"
         cx="350"
         cy="50"
         r="35" />
      <path
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         d="m 361.35156,16.931641 -37.74023,10.111328 a 35,35 0 0 0 -5.05274,7.683593 l 51.08008,-13.6875 a 35,35 0 0 0 -8.28711,-4.107421 z"
         class="patty__line" />
      <path
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         d="M 377.56445,28.453125 315.38477,45.113281 A 35,35 0 0 0 315,50 a 35,35 0 0 0 0.0547,1.529297 l 65.9785,-17.679688 a 35,35 0 0 0 -3.46875,-5.396484 z"
         class="patty__line" />
      <path
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         d="m 384.1543,42.550781 -67.45899,18.076172 a 35,35 0 0 0 2.36914,5.693359 l 65.88867,-17.654296 a 35,35 0 0 0 -0.79882,-6.115235 z"
         class="patty__line" />
      <path
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         d="m 383.91211,58.482422 -59.08008,15.832031 a 35,35 0 0 0 5.75391,4.785156 l 50.74609,-13.597656 a 35,35 0 0 0 2.58008,-7.019531 z"
         class="patty__line" />
      <path
         style="opacity:1;fill-opacity:1;stroke:none;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
         d="m 371.33203,77.720703 -25.9043,6.941406 A 35,35 0 0 0 350,85 35,35 0 0 0 371.33203,77.720703 Z"
         class="patty__line" />
    </g>
    <circle
       style="opacity:1;fill:none;fill-opacity:1;stroke:#111;stroke-width:4;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
       id="circle4790"
       cx="35"
       cy="35"
       r="33" />
  </g>
</svg>

  <div class="burger-toggle__border"></div>
</div>
              
            
!

CSS

              
                $borderWidth = 5px
$height = 100px
$width = 200px
$pattySize = 70px
$bgColor = #111
$borderColor = #fff
$meatColor = #fb9496
$meatCookedColor = #6d3b12
$meatCookedLinesColor = #311205
$transitionDuration = .5s
$cookingDuration = .25s

*
  box-sizing border-box

html
body
  align-items center
  background-color $bgColor
  display flex
  justify-content center
  margin 0
  padding 0
  height 100vh
  width 100vw

.burger-toggle
  border-radius ($height / 2)
  height $height
  overflow hidden
  // Wow. This is an odd one
  -webkit-mask-image linear-gradient(0deg, #000, #000)
  position relative
  width $width

  @media(min-width 768px)
    $height = 200px
    $width = 400px
    border-radius ($height / 2)
    height $height
    width $width

  &__border
    border-radius ($height / 2)
    position absolute
    top 0
    left 0
    right 0
    bottom 0
    border $borderWidth solid $borderColor

    @media(min-width 768px)
      $borderWidth = 10px
      $height = 200px
      border-radius ($height / 2)
      border $borderWidth solid $borderColor

  &__checkbox
    border 0
    cursor pointer
    height 100%
    left 0
    margin 0
    opacity 0
    padding 0
    position absolute
    top 0
    width  100%
    z-index 3

    &:checked ~ .worktop
      transform translateX(-50%)

    &:checked ~ .patty
      transform translateX(140%)

    &:checked ~ .patty .patty__line
    &:checked ~ .patty .patty__meat
      transition fill $transitionDuration ($transitionDuration + $cookingDuration)

    &:checked ~ .patty .patty__line
      fill $meatCookedLinesColor

    &:checked ~ .patty .patty__meat
      fill $meatCookedColor

.worktop
  height $height
  left 0
  position absolute
  top 0
  transition transform $transitionDuration
  width $width * 2

  @media(min-width 768px)
    $height = 200px
    $width = 400px
    height $height
    width ($width * 2px)

.patty
  border-radius 100%
  height $pattySize
  left (($height - $pattySize) / 2px)
  overflow hidden
  position absolute
  top (($height - $pattySize) / 2px)
  transition transform $transitionDuration

  @media(min-width 768px)
    $height = 200px
    $pattySize = 140px
    $width = 400px
    height $pattySize
    left (($height - $pattySize) / 2px)
    top (($height - $pattySize) / 2px)

  &__line
  &__meat
    transition fill $transitionDuration
    fill $meatColor
              
            
!

JS

              
                
              
            
!
999px

Console