.reveal .slides section .fragment
  +transition(all 0.2s ease)
  opacity: 0

.reveal .slides section .fragment.visible
  opacity: 1

.reveal .slides section .fragment.grow
  opacity: 1

.reveal .slides section .fragment.grow.visible
  +transform(scale(1.3))

.reveal .slides section .fragment.shrink
  opacity: 1

.reveal .slides section .fragment.shrink.visible
  +transform(scale(0.7))

.reveal .slides section .fragment.roll-in
  +transform(rotateX(90deg))
  opacity: 0

.reveal .slides section .fragment.roll-in.visible
  +transform(rotateX(0))
  opacity: 1

.reveal .slides section .fragment.fade-out
  opacity: 1

.reveal .slides section .fragment.fade-out.visible
  opacity: 0

.reveal .slides section .fragment.highlight-red,
.reveal .slides section .fragment.highlight-green,
.reveal .slides section .fragment.highlight-blue
  opacity: 1

.reveal .slides section .fragment.highlight-red.visible
  color: $red

.reveal .slides section .fragment.highlight-green.visible
  color: $green

.reveal .slides section .fragment.highlight-blue.visible
  color: $blue