[hidden] { display: none !important; }

.alert {
  border: border-width(1) solid $grey-3;
  padding: spacer(2);
  border-radius: radius(1);
  margin-bottom: spacer(2);

  > * { margin: 0; }
  > * + * { margin-top: spacer(1); }

  &.alert-danger {
    color: $red-3;
    background-color: $red-1;
    border-color: currentColor;
  }
}