pinafore/routes/_components/Avatar.html

<img alt="Profile picture for @{{account.acct}}" src="{{account.avatar_static}}">
<style>
  img {
    width: 48px;
    height: 48px;
    margin: 0 auto;
    border-radius: 4px;
  }
</style>
<script>
  export default {
    data: () => ({
      account: null
    })
  }
</script>