papercss/docs/layouts/_default/li.html

<div class='col sm-6 md-4'>
  <div class='card'>
    <div class="card-body">
      <h4 class="card-title">{{- .Title -}}</h4>
      <div class="card-text">
        {{- .Params.description -}}
      </div>
      <a class='paper-btn btn-block' href='{{ .Permalink | relURL }}'>
        Let's see!
      </a>
    </div>
  </div>
</div>