If close-on-background-click="true", cursor on bg should be zoom-out

[augnustin]

If close-on-background-click="true", cursor on bg should be pointer as the zone is clickable.

I sorted it out with:

<expandable-image class="bg-click" :src="img" :close-on-background-click="true"></expandable-image>

<style lang="scss">
  body > .expandable-image.expanded.bg-click {
    cursor: zoom-out;
    & > img {
      cursor: default;
    }
  }
</style>