pinafore/routes/_components/status/StatusSidebar.html

<a class="status-sidebar size-{{size}}"
   href="/accounts/{{originalAccountId}}"
   focus-key={{focusKey}}
   aria-hidden="true"
>
  <Avatar account={{originalAccount}}
          isLink="true"
          :size />
</a>
<style>
  .status-sidebar {
    grid-area: sidebar;
    margin-right: 15px;
  }

  .status-sidebar.size-small {
    width: 48px;
    height: 48px;
  }

  .status-sidebar.size-medium {
    width: 64px;
    height: 64px;
  }

  @media (max-width: 767px) {
    .status-sidebar {
      margin-right: 5px;
    }
  }
</style>
<script>
  import Avatar from '../Avatar.html'
  export default {
    components: {
      Avatar
    },
    computed: {
      focusKey: (uuid) => `status-author-avatar-${uuid}`,
      size: (isStatusInOwnThread) => isStatusInOwnThread ? 'medium' : 'small'
    }
  }
</script>