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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.

              input(type='checkbox', id='play')
label.play(for='play') Animation

  .inner z-index
  .inner without z-index
              html, body
  background: #111
  font-family: sans-serif

  display: none

  padding: 1rem
  color: white
  background: #666
  display: inline-block
  border-radius: 2px
  margin: 1rem
  cursor: pointer
  user-select: none


  ~ .play
    background: seagreen
  ~ .a
    animation: scenario 1s forwards

  display: block
  margin: 1rem
  padding: .25rem

    background: lightsalmon
    padding: 1rem
    position: absolute
.a .inner
  background: #358
  color: white
  z-index: 1
@keyframes scenario
    opacity: 0
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