.road
img.car(src="https://assets.codepen.io/605876/little-red-car.png" alt="Little red car")
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*
  box-sizing border-box

:root
  --road hsl(220, 8%, 50%)
  --grass hsl(90, 40%, 50%)
  --island hsl(45, 40%, 50%)
  --lines hsl(45, 80%, 90%)

@property --x
  inherits false
  initial-value -22.5
  syntax '<number>'

@property --y
  inherits false
  initial-value 0
  syntax '<number>'

@property --r
  inherits false
  initial-value 0deg
  syntax '<angle>'

body
  min-height 100vh
  display grid
  place-items center
  background var(--grass)

.car
  animation journey 5s infinite linear
  transform translate(calc(var(--x) * 1vmin), calc(var(--y) * 1vmin)) rotate(var(--r))
  width 3vmin
  object-fit cover

.road
  height 50vmin
  width 50vmin
  border-radius 12.5%
  border 5vmin solid var(--road)
  background var(--road)
  position absolute
  top 50%
  left 50%
  transform translate(-50%, -50%)

  &:before
    content ''
    position absolute
    height 44vmin
    width 44vmin
    border-radius 11%
    border 0.5vmin dashed var(--lines)
    top 50%
    left 50%
    transform translate(-50%, -50%)

  &:after
    content ''
    position absolute
    height 40vmin
    width 40vmin
    background var(--island)
    top 50%
    left 50%
    transform translate(-50%, -50%)
    border-radius 10%

@keyframes journey
  0%, 100%
    --x -22.5
  25%
    --x 0
  50%
    --x 22.5
  75%
    --x 0

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