$border-top($width = 1px, $color = rgba(black, 0.2), dbl = 0)
  position relative

  &:before
    position absolute
    top $bl(dbl)
    left 0
    //z-index 10000
    display block
    width 100%
    height $width
    background-color $color
    content ' '

$border-bottom($width = 1px, $color = rgba(black, 0.2), dbl = 0)
  position relative

  &:after
    position absolute
    bottom $bl(dbl)
    left 0
    //z-index 1000
    display block
    width 100%
    height $width
    background-color $color
    content ' '