.main-header-content
  height 200px
  color #FFF
  background transparent
  position absolute
  vertical-align middle
  text-align center
  top 10%
  text-shadow 1px 1px 2px #333
  left 35%

.main-header
  font-size 60px

.main-desc
  font-size 24px

.wrap
  background-image linear-gradient(0deg, #0097a7 0%, #00b8d4 100%)
  svg
    display block
    margin 0 auto

.curve
  stroke-opacity 0
  path
    transform-origin center 60px
    &:nth-child(1)
      stroke-width 1px
      animation curve 6s linear 1.2s infinite
    &:nth-child(2)
      stroke-width 1px
      animation curve 6s linear 2.4s infinite
    &:nth-child(3)
      stroke-width 2px
      animation curve 6s linear 3.6s infinite
    &:nth-child(4)
      stroke-width 2px
      animation curve 6s linear 4.8s infinite
    &:nth-child(5)
      stroke-width 3px
      animation curve 6s linear 6s infinite
    &:nth-child(6)
      stroke-width 3px
      animation curve 6s linear 7.2s infinite

@keyframes curve
  0%
    transform none
    stroke-opacity 0

  50%
    transform rotateX(360deg) scaleY(0.8)
    stroke-opacity .4

  100%
    transform none
    stroke-opacity 0