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                h1 Animate height with CSS transitions using scale()

  button.btn click me
    p Lorem ipsum dolor sit amet, consectetur adipisicing elit. Fugit voluptatem, aliquid non omnis quas expedita commodi ducimus explicabo, earum. Omnis!
    p Lorem ipsum dolor sit amet, consectetur adipisicing elit. Possimus, accusamus.


                @import url(;

  box-sizing border-box

    box-sizing border-box

  font-family 'Roboto', sans-serif
  text-align center
  font-size 14px
  font-size 1.6rem
  font-size 4rem
  line-height 5rem
  margin 4rem

  margin 4rem auto
  width 90%
  max-width 60rem

  line-height 2.2rem
    margin-bottom 2rem
//- Button  

  bg = #09c 
  background #09c
  border 0
  color #fff
  cursor pointer
  display block
  font-size 1.4rem 
  padding 1.5rem 3rem
  transition background .2s
  width 100%
    background darken(bg, 15%)
    background darken(bg, 50%)
//- Box

  background #e5e5e5 
  margin-left auto
  margin-right auto
  padding 3rem 
  text-align left
  transform scaleY(0)
  transition transform .3s
  transform-origin top left
    transform scaleY(1)


  .addEventListener('click', function (event) {