HTML看起来像:
%button.darkmode dark mode %button.refresh regenerate #wrap -10.times do .row -5.times do .cell
https://codepen.io/cobra_winfrey/pen/ZEYzMBj
[%button.darkmode dark mode将成为genarete <button class="darkmode">dark mode</button>
%button.darkmode dark mode
<button class="darkmode">dark mode</button>