{{ $href := partial "docs/links/portable-link" (dict "Page" .Page "Destination" (.Get "href")) -}}
{{ $isRemote := (urls.Parse $href).Scheme}}
<a {{ with $href }}href="{{ $href }}"{{ end }} {{ with $isRemote }}target="_blank" rel="noopener"{{ end }} class="book-btn{{ with .Get "class" }} {{ . }}{{ end }}">
  {{- .InnerDeindent -}}
</a>