{{ $context := . }}

<div class="btn-group pull-right m-1">
    {{ range .PageNumbers }}
        {{ if eq $context.Page . }}
            <button class="btn btn-primary">{{ . }}</button>
        {{ else }}
            <a href="{{ call $context.PageUrlFunc . }}" class="btn btn-outline-primary">{{ . }}</a>
        {{ end }}
    {{ end }}
</div>