public/styles/components/_message-bar.scss

.message-bar {
  width: 100%;
  padding: 5px;
  text-align: center;
  border-bottom: 1px solid;

  &--error {
    color: $cWhite;
    background-color: lighten($cRedE3, 0.2);
    border-color: $cRedB5;
  }
}