stylus base

@import '~common/stylus/variable'
// base
f-width-center(n)
  position absolute
  width n
  margin-left 50% - n * 0.5

// caller
invoke(arg, fn)
  fn(arg)

// component
c-div-full(imgUrl)
  background url(imgUrl) no-repeat center
  background-attachment fixed
  background-size cover
  width 100%
  height 100%
  position: fixed

c-btn-center(imgUrl, btn-width)
  background url(imgUrl) no-repeat center
  invoke(btn-width, f-width-center)
  background-size contain
  line-height 3
  bottom 8%
  border none