<form hx-post="{{ edit_flat_post_url }}" hx-target="this" hx-swap="outerHTML">
  <div class="cluster">
    <input class="editable-h2" type="text" name="title" value="{{ form.title.value }}">
    <button type="submit">
      <svg class="edit-icon-small">
        <use href="#ok"></use>
      </svg>
    </button>
  </div>
  {% for error in form.title.errors %}
    <p class="error">{{ error|escape }}</p>
  {% endfor %}
</form>