<div class="container sm:mx-auto">
  <button class="
                    flex
                    mx-auto
                    rounded
                    py-2
                    px-3
                    m-2
                    bg-yellow-300
                    hover:bg-green-500
                    hover:text-white
                    sm:hover:bg-orange-500
                    focus:outline-none
                    border-blue-900
                    hover:border-red-900 hover:border-dashed
                    border-2
                ">
    Click Me
  </button>
  <br>
  <p class="text-center">
    <code class="bg-pink-200 p-1 text-red-500">border-dashed</code>沒有效果
  </p>
</div>