<div class="h-card">
  <p class="p-name">Valid</p>
  <p class="p-nam1e">Invalid</p>
  <p class="p-nam_e">Invalid</p>
  <p class="x-name">Invalid</p>
  <p class="x-p-name">Invalid</p>

  <p class="p-vendor-name">Valid</p>
  <p class="p-vendor--name">Invalid</p>
  <p class="p-vendor-8name">Invalid</p>
  <p class="p-vendor-name-">Invalid</p>

  <p class="p-8-vendor-name">Valid</p>
  <p class="p-8to8-vendor-name">Valid</p>

  <p class="p-8to8-ven1or-name">Invalid</p>
  <p class="p-8-8-vendor-name">Invalid</p>p
  <p class="p-super-extra-long-microformat-property-name">Valid</p>
</div>