fvtt-hero-system-6/templates/items/item-perk-sheet.hbs

<form class="{{cssClass}}" autocomplete="off">
    <header class="sheet-header">
        <img class="item-sheet-img" src="{{img}}" data-edit="img" title="{{name}}"/>
        <div class="header-fields">
            <h1 class="charname"><input name="name" type="text" value="{{name}}" placeholder="Name"/></h1>
        </div>
    </header>

    {{> systems/fvtt-hero-system-6/templates/partials/partial-item-nav.hbs}}

    {{!-- Sheet Body --}}
    <section class="sheet-body">

      {{> systems/fvtt-hero-system-6/templates/partials/partial-item-description.hbs}}

      <li class="flexrow"><label class="generic-label">Cost</label>
        <input type="text" class="" name="system.cost" value="{{system.cost}}" data-dtype="Number"/>
      </li>

      <div class="tab details" data-group="primary" data-tab="details">
        </div>
    </section>
</form>