CSS Dominos

css-dominos.markdown

CSS Dominos

Playing around with CSS variables, animations & transforms to create infinite loop.

---

Original motion design by Gal Shir https://dribbble.com/shots/3195071-Domino

A Pen by James Warren on CodePen.

License.

index.html

<div class="settings">
  <h3>Scale</h3>
  <button class="settings__scale is-active" onclick="changeScale(1, this)">1</button>
  <button class="settings__scale" onclick="changeScale(.5, this)">.5</button>
  <button class="settings__scale" onclick="changeScale(.25, this)">.25</button>
  <button class="settings__scale" onclick="changeScale(.1, this)">.1</button>

  <h3>Duration</h3>
  <button class="settings__duration" onclick="changeDuration('.7s', this)">.7s</button>
  <button class="settings__duration is-active" onclick="changeDuration('.5s', this)">.5s</button>
  <button class="settings__duration" onclick="changeDuration('.3s', this)">.3s</button>
</div>
<div>
  <div id="container" class="container">
    <section class="stage">
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
      <div class="domino">
        <figure class="domino__top"></figure>
        <figure class="domino__front"></figure>
        <figure class="domino__bottom"></figure>
        <figure class="domino__left"></figure>
        <figure class="domino__shadow"></figure>
      </div>
    </section>
  </div>
</div>
<div class="attribution">
        Original concept by <a href="https://dribbble.com/galshir" target="_blank">Gal Shir</a>
    </div>

script.js

const container = document.getElementById('container');
const scaleButtons = document.getElementsByClassName('settings__scale');
const durationButtons = document.getElementsByClassName('settings__duration');

function changeScale(scale, el) {
  removeActive(scaleButtons);
  el.classList.add('is-active');
  container.style.setProperty('--scale', scale);
}

function changeDuration(duration, el) {
  removeActive(durationButtons);
  el.classList.add('is-active');
  document.documentElement.style.setProperty('--animation-duration', duration);
}

function removeActive(elements) {
  [].forEach.call(elements, el => el.classList.remove('is-active'));
}

style.scss

$bg: #24527A;
$container-bg: #ff4470;
$color-front: #e7f6ff;
$color-left: #9bdaff;
$color-top: #fff;
$color-bottom: #65c6ff;
$fallPosition: rotateY(-60deg) translate3d(-70px, 30px, -100px);

$btn-bg: $container-bg;

:root {
  --animation-duration: .5s;
}

@import url('https://fonts.googleapis.com/css?family=Roboto:300,400');

html, body {
    height: 100%;
    min-height: 100%;
}
body {
    margin: 0;  
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    background: linear-gradient(to bottom right, $bg, $bg);
    color: #fff;
}
figure {
    margin: 0;
}
h3 {
    font-weight: 300;
}
.attribution {
    position: fixed;
    bottom: 0;
    right: 0;
    color: #fff;
    font-size: 12px;
    padding: 5px;

    a {
        color: $container-bg;
    }
}
.settings {
    margin-right: 1rem;
    width: 100px;

    &:before {
        content: var(--animation-duration);
    }

    button {
        display: inline-block;
        margin-bottom: .5rem;
        margin-right: .5rem;
        background: #fff;
        border: none;
        width: 40px;
        height: 30px;
        font-size: .8rem;
        color: #fff;
        background: $btn-bg;
        border-radius: 2px;
        cursor: pointer;
        outline: none;

        &.is-active {
            background: #fff;
            color: $container-bg;
        }
    }
}
.current {
    h3 {
        margin-top: 0;
    }
    padding: 1rem;
    background: rgba(#fff,.2);
    &__value {
        width: 49%;
        display: inline-block;
        &:after {
            content: attr(data-value);
        }
    }
}
.container {
    --scale: 1;
    width: 350px;
    height: 300px;
    overflow: hidden;
    background: $container-bg;
    transform: scale(var(--scale));
    transition: transform .4s ease-in-out;
}
.stage {
    top: -225px;
    left: -150px;
    position: relative;
    transform: rotate3d(6, -3, 6.2, 81deg);
    transform-style: preserve-3d;
    transform-origin: 0 0;
    animation: moveStage var(--animation-duration) linear infinite;
}

.domino {
    transform: rotateY(0deg);
    transform-style: preserve-3d;
    transition: transform .2s;

    @for $i from 1 through 10 {
     &:nth-child(#{$i}) {
         position: absolute;
         left: 90px * $i;
     }
    }

    &:nth-child(6) {
        .domino__front {
            &:after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 100%;
                height: 47%;
                background: rgba(#000, .07);
                box-shadow: 0 0 30px rgba(0,0,0,.1);
                transform: scale(1,0);
                transform-origin: 100% 100%;
                animation: var(--animation-duration) fallShadow linear infinite;
            }
        }
    }
    &:nth-child(7) {
        animation: fall var(--animation-duration) linear infinite;

        .domino__front {
            animation: fallFrontBg var(--animation-duration) linear infinite;

            &:after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 100%;
                height: 35%;
                background: rgba(#000, .07);
                box-shadow: 0 0 30px rgba(0,0,0,.1);
            }
        }
        .domino__shadow {
            animation: shadowRotate var(--animation-duration) linear infinite;
        }
    }
    &:nth-child(8),
    &:nth-child(9),
    &:nth-child(10) {
        transform: $fallPosition;
        .domino__front {
            background: #fff;
            &:after {
                content: '';
                position: absolute;
                bottom: 0;
                left: 0;
                width: 100%;
                height: 35%;
                background: rgba(#000, 0.07);
                box-shadow: 0 0 30px rgba(0,0,0,.1);
                transform: scale(1,1);
                transform-origin: 100% 100%;
            }
        }
        .domino__shadow {
            transform: rotateY(60deg) translate3d(-25px, -25px, 0px);
        }
    }
    
}

.domino figure {
    display: block;
    position: absolute;
    font-size: 90px;
    text-align: center;
    font-weight: bold;
    color: white;
    backface-visibility: hidden;
}

.domino__top,
.domino__bottom {
    width: 15px;
    height: 50px;
}

.domino__front {
    position: relative;
    width: 50px;
    height: 100px;
    left: 84px;
}

.domino__left {
    width: 15px;
    height: 100px;
    top: 0;
}

.domino__shadow {
    width: 1px;
    height: 50px;
    background: rgba(0, 0, 0, 0.228);
    border-radius: 10px;
    box-shadow: 0 0 77px 10px rgba(0, 0, 0, 0.8);
}


.domino__top  { background: $color-top; }
.domino__front   { background: $color-front; }
.domino__left { background: $color-left; }
.domino__bottom { background: $color-bottom; }

.domino__top  {
    transform: translate3d(125px, 25px, 25px);
}
.domino__bottom  {
    transform: rotateX(180deg) translate3d(125px, -25px, 75px);
}
.domino__front {
    transform: rotateY(-90deg) rotateX(180deg) rotateZ(90deg) translate3d(0px,25px,30px);
}
.domino__left {
    transform: rotateX(-90deg) translate3d(125px, 25px, 25px);
}
.domino__shadow  {
    transform: translate3d(125px, 25px, -75px);
}

@keyframes moveStage{
 0% {
     transform: rotate3d(6, -3, 6.2, 81deg) translate3d(0,0,0);
 }   
 100% {
     transform: rotate3d(6, -3, 6.2, 81deg) translate3d(90px,0,0);
 }
}

@keyframes fall{
 0% {
     transform: rotateY(0deg) translate3d(0,0,0);
 }   
 100% {
     transform: $fallPosition;
 }
}

@keyframes fallFrontBg{
 0% {
     background: #e7f6ff;
 }   
 100% {
     background: #fff;
 }
}

@keyframes fallShadow{
 0% {
     transform: scale(1,0);
 }   
 74% {
     transform: scale(1,1);
 }
 100% {
     transform: scale(1,1);
 }
}

@keyframes shadowRotate{
 0% {
     transform: rotateY(0deg) translate3d(125px, 25px, -75px);
 }   
 100% {
     transform: rotateY(60deg) translate3d(-25px, -25px, 0px);
 }
}