trycua--cua/libs/cua-bench/example_tasks/basic_gui_env/gui/index.html

<div class="p-1">
  <h1>Click the button</h1>
  <button id="submit" class="btn" data-instruction="the button">Submit</button>
  <script>
    window.__submitted = false;
    document.getElementById('submit').addEventListener('click', function () {
      window.__submitted = true;
      this.textContent = 'Submitted!';
      this.disabled = true;
    });
  </script>
</div>