posthtml-bootstrap/dist/ui/card/title.html

A PostHTML plugin that allows you to use Bootstrap components directly in your HTML code

<script props>
  module.exports = { subtitle: props.subtitle }
</script>

<h5 class="card-title"><children /></h5>
<if condition="subtitle">
  <h6 class="card-subtitle mb-2 text-body-secondary">{{subtitle}}</h6>
</if>