message: Highlight store headings with a box instead of lightness
diff: &:hover,
  &:active {
  - .background {
  - filter: brightness(130%) !important;
  + position: relative;
  + &:after {
  + content: '';
  + display: block;
  + position: absolute;
  + top: -4px;
  + left: -4px;
  + right: -4px;
  + bottom: -4px;
  + border: 1px solid white;
  }
  }
  }
  