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HTML

              
                
              
            
!

CSS

              
                $gap: 2rem;
$color-gray-100: #f1f5f9;
$color-gray-200: #e2e8f0;
$color-gray-300: #cbd5e1;
$color-gray-400: #94a3b8;
$color-gray-500: #64748b;
$color-gray-700: #334155;
$color-gray-800: #1e293b;
$color-gray-900: #0f172a;
$color-orange-300: #fbd38d;
$color-orange-400: #f6ad55;
$color-orange-500: #ed8936;


html, body {
  width: 100%;
  height: 100%;
  font-family: 'BioRhyme', serif;
  background: $color-gray-300;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 300rem;
}

@function layered_shadow($layers, $gap_x, $gap_y, $color) {
  $value: 0 0 $color;
  @for $i from 1 through $layers {
    $value: #{$value}, #{$i * $gap_x}rem #{$i * $gap_y}rem #{$color};
  }
  @return $value;
}

.keyboard {
  transform: rotateX(60deg) rotateZ(45deg);
  transform-style: preserve-3d;
  background: $color-gray-800;
  border-radius: 2rem;
  padding: $gap;
  box-shadow: inset 1rem 1rem 0 0.4rem $color-gray-400;
  display: flex;
  gap: 0 $gap;

  .shade {
    position: absolute;
    top: 0;
    left: 0;
    width: 90%;
    height: 5rem;
    background-image: linear-gradient(90deg, $color-gray-400 50%, $color-gray-300);
    transform: rotateX(90deg) rotateX(14deg) translateX(10rem) translateY(-6rem) translateZ(-39rem);
    filter: blur(0.5rem);
  }

  .cover {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: transparent;
    border-radius: 2rem;
    box-shadow:
      inset -0.3rem -0.3rem 0.1rem 0.2rem $color-gray-100,
      inset -1rem -1rem 0 0.4rem $color-gray-300,
      inset -2rem -2rem 2rem  -0.6rem $color-gray-500,
      layered_shadow(25, 0.3, 0.3, $color-gray-200),
      8rem 10rem 2rem rgba($color-gray-900, 20%),
      8rem 8rem 0.5rem rgba($color-gray-900, 20%);
  }
}

.row {
  display: flex;
  gap: 0 $gap;

  &:not(:first-child) {
    filter: drop-shadow(2rem -0.5rem 0.5rem rgba($color-gray-700, 30%));

    .key:not(:first-child) {
      filter: drop-shadow(-0.5rem 0.5rem 0.5rem rgba($color-gray-700, 30%));
    }
  }

  & > .key.span {
    flex: 1;

    .side {
      width: 120%;
      height: 237%;
      transform: rotateZ(45deg) translate(24%, -14%) skew(337deg);
      background-image: linear-gradient($color-gray-100 25%, $color-gray-300 30%);
    }

    .top::before {
      transform: translate(5%, 5%);
    }

    .top::after {
      background-image: linear-gradient(-25deg, transparent 45%, $color-gray-200 55%);
    }
  }
}

.column {
  display: flex;
  flex-direction: column;
  gap: $gap 0;

  & > .key.span {
    flex: 1;

    .side {
      width: 220%;
      height: 103%;
      transform: rotateZ(45deg) translate(27%, 17%) skew(22deg);
      background-image: linear-gradient($color-orange-300 70%, $color-orange-500 75%);
    }

    .top::before {
      background-color: $color-orange-400;
      transform: translate(5%, 5%);
    }

    .top::after {
      background-image: linear-gradient(291deg, transparent 45%, $color-orange-400 50%);
    }
  }

  &:not(:first-child) {
    filter: drop-shadow(-0.5rem 0.5rem 0.5rem rgba($color-gray-700, 30%));
  }
}

.key {
  position: relative;
  width: 6rem;
  height: 6rem;
  transform: translateX(-3rem) translateY(-3rem);
  transform-style: preserve-3d;
  user-select: none;
  transition: transform 0.1s ease-out;

  &.active {
    transform: translateX(-1rem) translateY(-1rem);
  }

  .char {
    position: absolute;
    font-size: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: $color-gray-500;
    text-shadow:
      0.05rem 0.0rem 0 $color-gray-400,
      0.05rem 0.1rem 0 $color-gray-900,
      0.1rem 0.05rem 0 $color-gray-400,
      0.1rem 0.15rem 0 $color-gray-900,
      0.15rem 0.1rem 0 $color-gray-400,
      0.15rem 0.2rem 0 $color-gray-900,
      0.2rem 0.15rem 0 $color-gray-400,
      0.2rem 0.25rem 0 $color-gray-900,
      0.25rem 0.2rem 0 $color-gray-400,
      0.25rem 0.3rem 0 $color-gray-900;

  }

  .side {
    position: absolute;
    width: 250%;
    height: 140%;
    background-image: linear-gradient($color-gray-100 45%, $color-gray-300 55%);
    border-radius: 1rem;
    transform: rotateZ(45deg) translate(19%, 28%);
  }

  .top {
    position: absolute;
    width: 100%;
    height: 100%;

    &::before {
      content: '';
      position: absolute;
      width: 100%;
      height: 100%;
      background-color: $color-gray-200;
      border-radius: 0.8em;
      filter: blur(0.3rem);
      transform: translate(10%, 10%);
    }

    &::after {
      content: '';
      position: absolute;
      width: 105%;
      height: 105%;
      background-image: linear-gradient(-45deg, transparent 45%, $color-gray-200 55%);
      border-radius: 0.8rem;
      box-shadow: inset -0.2rem -0.2rem 0.5rem -0.2rem white, 0.2rem 0.2rem 0.5rem -0.2rem white;
    }
  }
}
              
            
!

JS

              
                import React, { useState, useEffect, useRef } from 'https://cdn.skypack.dev/react';
import ReactDOM from 'https://cdn.skypack.dev/react-dom';

const useSetState = (initialState = []) => {
    const [state, setState] = useState(new Set(initialState));
    const add = (item) => setState(state => new Set(state.add(item)));
    const remove = (item) => setState(state => {
        state.delete(item);
        return new Set(state);
    });
    return { set: state, add, remove, has: char => state.has(char) };
}

const useSound = (url) => {
    const sound = useRef(new Audio(url));
    return { 
      play: () => sound.current.play(), 
      stop: () => {
        sound.current.pause();
        sound.current.currentTime = 0;
      }
    }
};

const Key = ({ char, span, active }: { char: string, span?: boolean, active: boolean}) => { 
    return (
        <div className={['key', span && 'span', active && 'active'].filter(Boolean).join(' ')}>
            <div className='side'/>
            <div className='top'/>
            <div className='char'>{char}</div>
        </div>
    )
}

const Column = ({ children }) => (
  <div className='column'>
    {children}
  </div>
);

const Row = ({ children }) => (
  <div className='row'>
    {children}
  </div>
);

const Keyboard = () => {
  // Mechanical click sound 😎
  const { play, stop } = useSound('https://cdn.yoavik.com/codepen/mechanical-keyboard/keytype.mp3');
  
    const { add, remove, has } = useSetState([]);

    useEffect(() => {
        document.addEventListener('keydown', e => { add(e.key); stop(); play(); });
        document.addEventListener('keyup', e => remove(e.key));
    }, []);

    const keys = (chars: string[], spans: boolean[] = []) => chars.map((char, i) => (
        <Key key={char} char={char} span={spans[i] || false} active={has(char)}/>
    ));

    return (
        <div className='keyboard'>
            <Column>
                <Row>
                    {keys(['7', '8', '9'])}
                </Row>
                <Row>
                    {keys(['4', '5', '6'])}
                </Row>
                <Row>
                    {keys(['1', '2', '3'])}
                </Row>
                <Row>
                    {keys(['0', '.'], [true, false])}
                </Row>
            </Column>
            <Column>
                {keys(['+', '-'], [true, true])}
            </Column>
            <div className='shade'/>
            <div className='cover'/>
        </div>
    );
}

ReactDOM.render(
  <Keyboard/>,
  document.body
);
              
            
!
999px

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