Pretty sure you can lose all of those single line "," and make it a bit nicer.

    div
      className: 'navbar-form'
      style: 
        backgroundColor: "green"
      div
        className: 'btn-group'
        button
          type: 'button'
          className: 'btn btn-warning'
          onClick: @handleDecreaseWpmClick
          span
            className: 'glyphicon glyphicon-chevron-down'
        span
          className: 'btn btn-default disabled'
          "#{ @props.status.get('wpm') }"
          span
            className: 'hidden-xs'
            " wpm"
        button
          type: 'button'
          className: 'btn btn-warning'
          onClick: @handleIncreaseWpmClick
          span
            className: 'glyphicon glyphicon-chevron-up'