Testing 4

<div className="flex">
  <!-- Sidebar Section -->
  <span className="h-screen w-28 bg-gray-600"></span>

  <!-- Grid Section -->
  <div className="flex-auto pl-3">
    <div className="grid h-screen grid-cols-3 gap-4">
      <div className="w-full bg-gray-100"></div>
      <div className="w-full bg-gray-100"></div>
      <div className="w-full bg-gray-100"></div>
    </div>
  </div>
</div>