todogo/views/_task.html

<li class="{{if .Completed}}completed{{end}}">
  <div class="view">
    <form class="toggle" action="/toggle?id={{.Id}}" method="POST">
      <button></button>
    </form>
    <!-- <input class="toggle" type="checkbox" {{if .Completed}}checked{{end}}> -->
    <label>{{.Title}}</label>

    <form action="/destroy?id={{.Id}}" method="POST">
      <button class="destroy"></button>
    </form>
  </div>
</li>