transition-g()
  transition-property color, background, box-shadow, border-color
  transition-delay 0s, 0s, 0s, 0s
  transition-duration 0.2s, 0.2s, 0.2s, 0.2s
  transition-timing-function ease, ease, ease, ease

transition-t(property, delay, duration, function)
  $temp-property = 'color, background, box-shadow, border-color'
  $temp-delay = '0s, 0s, 0s, 0s'
  $temp-duration = '0.2s, 0.2s, 0.2s, 0.2s'
  $temp-function = 'ease, ease, ease, ease'

  for p in convert(property)
    $temp-property += ',' + p

  for d in convert(delay)
    $temp-delay += ',' + d + 's'

  for d in convert(duration)
    $temp-duration += ',' + d + 's'

  for f in convert(function)
    $temp-function += ',' + f

  transition-property convert($temp-property)
  transition-delay convert($temp-delay)
  transition-duration convert($temp-duration)
  transition-timing-function convert($temp-function)


@keyframes fade-in-down
  0%
    opacity 0
    transform translateY(-50px)

  100%
    opacity 1
    transform translateY(0)

@keyframes icon-animate
  0%, 100%
    transform scale(1)

  10%, 30%
    transform scale(0.88)

  20%, 40%, 60%, 80%
    transform scale(1.08)

  50%, 70%
    transform scale(1.08)

.title-hover-animation
  display inline-block
  position relative
  border-bottom none
  line-height 1.3
  vertical-align top
  color var(--second-text-color)

  &::before
    content ''
    position absolute
    width 100%
    height 2px
    bottom -4px
    left 0
    background-color var(--second-text-color)
    visibility hidden
    transform scaleX(0)
    transition-t('visibility transform', '0, 0', '0.2, 0.2', 'ease-in-out, ease-in-out')