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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              h1 animation play state
ul
  li
    .cell
      #ball.c

.center
  button#button.btn.btn-warning(type="button", data-status="1") PAUSE
            
          
!
            
              @import 'nib';
@keyframes move
  0%   { background-color: #8CC152; left: 0; }
  35%  { background-color: #4FC1E9; }
  50%  { background-color: #967ADC; }
  65%  { background-color: #E9573F; }
  100% { background-color: #F6BB42; left: calc(100% - 2em); }

.c
  position: absolute
  left: 0
  background-color: #E6E9ED
  animation move 5s ease-in-out 0s infinite alternate both
  &.running
    animation-play-state: running
  &.paused
    animation-play-state: paused

$w = 2em
  
html
  font-size: 100%
h1
  font-size: 2.4rem
  text-align: center
ul
  list-style: none
  margin: 2em auto 2em
  padding: 0
  max-width: 760px
li
  display: flex
  flex-direction: row
  justify-content: flex-start
  align-items: center
  padding: .5em 1em
  border-bottom: 1px solid #AAB2BD
  width: 100%
  box-sizing: border-box
  &:first-child
    border-top: 1px solid #AAB2BD
.cell
  position: relative
  flex: 1
  height: $w
label
  font-size: 83%
  white-space: nowrap
  padding-right: .5em
  width: 8em
.c
  border-radius: 50%
  width: $w
  height: $w
  
colors = {
  '1': #A0D468,
  '2': #FFCE54,
  '3': #4FC1E9,
  '4': #E9573F,
  '5': #967ADC,
  '6': #D770AD,
  '7': #4A89DC,
  '8': #DA4453,
  '9': #5D9CEC,
  '10': #ED5565
}
for key, value in colors
  .c[data-col=\"{key}\"]
    background-color: value

.center
  text-align: center
.btn
  display: block
  font-size: 112%
  text-transform: uppercase
  cursor: pointer
  margin: 0 auto 1em
  padding: .5em 1em
  width: 100%
  max-width: 300px
.btn
  &:disabled
    cursor: default
            
          
!
            
              const d = document;
const statusList = [
  {key: 'paused', value:'warning'},
  {key: 'running', value:'info'},
 ];
const $btn = d.getElementById('button');
const $ball = d.getElementById('ball');

$ball.classList.add( statusList[1].key );

$btn.addEventListener('click', () => {
  const status = $btn.getAttribute('data-status') - 0;
  const toggleIndex = !status - 0;
  const now  = statusList[status];
  const next = statusList[toggleIndex];
  $btn.setAttribute('data-status', toggleIndex);
  // reset
  $ball.classList.remove(now.key);
  $ball.classList.add(next.key);
  $btn.classList.add(`btn-${now.value}`);
  $btn.classList.remove(`btn-${next.value}`);
  $btn.textContent = now.key;
});
            
          
!
999px
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