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HTML

CSS

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JavaScript

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HTML

              
                <div class="main">
  <div class="dark">
    <button class="raised neu"></button>
    <input type="text" class="sunken neu">
  </div>
  <div class="light">
    <button class="raised neu"></button>
    <input type="text" class="sunken neu">
  </div>
</div>
              
            
!

CSS

              
                $dark: #20222d
$light: #cfcebc
$shadow-light: rgba(255,255,255,0.05)
$shadow-dark: rgba(0,0,0,0.2)

body, html
  width: 100%
  height: 100%
  margin: 0
  overflow: hidden

.main
  display: flex
  flex-direction: row
  width: 100%
  height: 100%
  &>div
    display: flex
    flex-direction: column
    align-items: center
    justify-content: center
    flex: 1
    height: 100%
  
button
  border: none
  width: 250px
  height: 250px
  border-radius: 50%
  
input
  margin: 20px
  padding: 0 1rem
  border: none
  height: 50px
  line-height: 50px
  width: 20rem
  border-radius: 25px
  font-size: 2rem
  
.dark
  background-color: $dark
  &>button
    background-color: lighten($dark, 2%)
  &>input
    color: $light
    background-color: darken($dark, 2%)

.light
  background-color: $light
  &>button
    background-color: lighten($light, 5%)
  &>input
    color: $dark
    background-color: darken($light, 5%)
    
// Neumorphism proper
.neu
    &.raised
      box-shadow: -10px -10px 20px 0px $shadow-light, 10px 10px 20px 0px $shadow-dark
    
    &.sunken
      box-shadow: -5px -5px 20px 0px $shadow-light inset, 5px 5px 20px 0px $shadow-dark inset
              
            
!

JS

              
                
              
            
!
999px

Console