{{- $url := .Get "href" | safeURL -}}
{{- $parentPath := partial "relative-link.html" . -}}
<a class="cta {{with .Get "full_width"}}full_width{{end}}" href="
  {{- if hasPrefix $url "/" -}}
    {{- $parentPath }}{{ $url | relURL -}}
  {{- else -}}
    {{- $url -}}
  {{- end -}}
" {{with .Get "target"}}target="{{.}}"{{end}}>
  {{ .Inner | $.Page.RenderString }}
</a>
{{- /* Chomp trailing newline. */ -}}