{{ $class := .Get "class" | default "btn btn-outline-primary" }}
{{ $icon  := .Get "icon"  | default "fas fa-house-medical-flag" }}

<a class="{{ $class }}" href="https://{{ .Site.Params.partnerDomain }}">
    {{ if $icon }}<i class="{{ $icon }}"></i>{{ end }}
    {{ .Site.Params.partnerName }}
</a>