@mixin bp-shadow($h-offset, $v-offset, $blur, $spread, $color) {
  box-shadow: $h-offset $v-offset $blur $spread $color;
  -o-box-shadow: $h-offset $v-offset $blur $spread $color;
  -webkit-box-shadow: $h-offset $v-offset $blur $spread $color;
  -moz-box-shadow: $h-offset $v-offset $blur $spread $color;
}