CodePen Embed - Digital Clock #3December

<div class="time" id="time" data-hours="" data-minutes="">
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
  <div class="digit">
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
    <div class="line"></div>
  </div>
</div>

$easing: cubic-bezier(0.5, 0, 0.5, 1);
$easing-alt: cubic-bezier(0.4, 0, 0.1, 1);
$color-primary: #0BFDFD;

:root {
  --mouse-x: 0;
  --mouse-y: 0;
}

.time {
  display: flex;
  flex-direction: row;
  transform: translateZ(20px);
  transform:
    translateZ(20px)
    rotateX(calc(var(--mouse-y) * 45deg))
    rotateY(calc(var(--mouse-x) * 45deg))
}

* {
  transform-style: preserve-3d;
  perspective: 1000px;
}

@mixin collapse($lines) {
  @each $line in $lines {
    :nth-child(#{$line}) {
      &:before, &:after {
        opacity: 0.3;
        transform: translateZ(-2vmax);
      }
    }
  }
}

.digit {
  height: 20vmin;
  width: 10vmin;
  transform-style: preserve-3d;
  perspective: 1000px;
  margin: 0 1rem;
  
  &, &:after, &:before {
    transition: transform 1s $easing;
  }
  
  &:hover {
    transform: translateZ(2vmax);
    
    &:after, &:before {
      transform: translateZ(-2vmax);
    }
  }
  
  &:nth-child(2), &:nth-child(4) {
    margin-right: 3vmax;
    &:before, &:after {
      content: '';
      background: white;
      display: block;
      position: absolute;
      text-align: center;
      width: 1vmax;
      height: 1vmax;
      left: calc(100% + 2vmax);
      box-shadow: 0 0 1rem $color-primary, inset 0 0 0.25vmax $color-primary;
      font-size: 8vmax;
      text-shadow: 0 0 1rem $color-primary;
      animation: pulse 1s alternate $easing infinite;
    }
    
    &:before {
      top: 30%;
    }
    &:after {
      bottom: 30%;
    }
  }
}

@keyframes pulse {
  to {
    opacity: 0.5;
  }
}

$config: (
  0: 4,
  1: 1 2 4 5 6,
  2: 1 7,
  3: 1 5,
  4: 2 5 6,
  5: 3 5,
  6: 3,
  7: 1 4 5 6,
  8: (),
  9: 5,
);

@each $i, $lines in $config {
  @if ($i <= 2) {    
    [data-hours^="#{$i}"] {
      .digit:nth-child(1) {
        @include collapse(map-get($config, $i));
      }
    }
  }
  [data-hours$="#{$i}"] {
    .digit:nth-child(2) {
      @include collapse(map-get($config, $i));
    }
  }
  [data-minutes^="#{$i}"] {
    .digit:nth-child(3) {
      @include collapse(map-get($config, $i));
    }
  }
  [data-minutes$="#{$i}"] {
    .digit:nth-child(4) {
      @include collapse(map-get($config, $i));
    }
  }
  [data-seconds^="#{$i}"] {
    .digit:nth-child(5) {
      @include collapse(map-get($config, $i));
    }
  }
  [data-seconds$="#{$i}"] {
    .digit:nth-child(6) {
      @include collapse(map-get($config, $i));
    }
  }
}

.line {
  position: absolute;
  transform-style: preserve-3d;
  perspective: 1000px;
  
  &:before, &:after {
    content: '';
    display: block;
    position: absolute;
    color: $color-primary;
    background: white;
    transition: all 0.9s $easing;
    border-radius: 1ch;
    box-shadow:
      0 0 1rem $color-primary,
      inset 0 0 0.125vmin $color-primary  
    ;
  }
  
  &:after {
    transition-timing-function: $easing-alt;
  }
  
  &:nth-child(2n - 1) {
    height: 50%;
    width: 0.5vmin;
    
    &:before, &:after {
      height: calc(50% - 0.25vmin);
      width: 100%;
    }
    &:before {
      top: 0.25vmin;
      transform-origin: center top;
    }
    &:after {
      bottom: 0.25vmin;
      transform-origin: center bottom;
    }
  }
  &:nth-child(2n) {
    width: 100%;
    height: 0.5vmin;
    
    &:before, &:after {
      height: 100%;
      width: calc(50% - 0.25vmin);
    }
    &:before {
      left: 0.25vmin;
      transform-origin: left center;
    }
    &:after {
      right: 0.25vmin;
      transform-origin: right center;
    }
  }
  
  &:nth-child(1) {
    top: 0;
    left: 0;
  }
  &:nth-child(2) {
    top: 0;
    left: 0;
  }
  &:nth-child(3) {
    top: 0;
    right: 0;
  }
  &:nth-child(4) {
    top: 50%;
    left: 0;
  }
  &:nth-child(5) {
    top: 50%;
    left: 0;
  }
  &:nth-child(6) {
    bottom: 0;
    left: 0;
  }
  &:nth-child(7) {
    top: 50%;
    right: 0;
  }
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #121212;
  transform-style: preserve-3d;
  perspective: 1000px;
}

body, html {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

*, *:before, *:after {
  box-sizing: border-box;
  position: relative;
}

*:before, *:after {
  content: '';
  display: block;
}

View Compiled

const timeElm = document.getElementById('time');
const doc = document.documentElement;
const { clientWidth, clientHeight } = doc;

const pad = (val) => val < 10 ? `0${val}` : val;

const animationFrame$ = Rx.Observable.interval(0, Rx.Scheduler.animationFrame);

const time$ = Rx.Observable
  .interval(1000)
  .map(() => {
    const time = new Date();
    
    return {      
      hours: time.getHours(),
      minutes: time.getMinutes(),
      seconds: time.getSeconds(),
    };
  })
  .subscribe(({ hours, minutes, seconds}) => {
    timeElm.setAttribute('data-hours', pad(hours));
    timeElm.setAttribute('data-minutes', pad(minutes));
    timeElm.setAttribute('data-seconds', pad(seconds));
  });

const mouse$ = Rx.Observable
  .fromEvent(document, 'mousemove')
  .map(({clientX, clientY}) => ({
    x: (clientWidth / 2 - clientX) / clientWidth,
    y: (clientHeight / 2 - clientY) / clientHeight,
  }));

const smoothMouse$ = animationFrame$
  .withLatestFrom(mouse$, (_, m) => m)
  .scan(RxCSS.lerp(0.1));

RxCSS({
  mouse: smoothMouse$
}, timeElm);

View Compiled

This Pen is owned by David Khourshid on CodePen.

See more by @davidkpiano on CodePen

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