.information {
  @include feedback(#eee, $black, 3px double #aaa, #1796d1)
}
.error {
  @include feedback(#fbe3e4, #d12f19, 3px double #aaa, #d11717)
}
.notice {
  @include feedback(#fff6bf, #817134, 3px double #aaa, #d1b917)
}
.success {
  @include feedback(#e6efc2, #529214, 3px double #aaa, #9dd117)
}