3D Press Buttons

<div class="container py-5">
  <h3 class="mb-4 fw-bold">3D Press</h3>
  <div class="d-flex flex-wrap gap-3">
    <button class="btn3d">Primary</button>
    <button class="btn3d btn3d-red">Danger</button>
    <button class="btn3d btn3d-green">Success</button>
    <button class="btn3d btn3d-dark">Dark</button>
  </div>
</div>