沒寫過的 CSS 要踹好久= =
<span class=" box relative bg-gray-400 flex-none p-2 text-center">
<span class="absolute top-0 left-0 h-1 w-1 bg-gray-700"></span>
各種分類
<span class="absolute bottom-0 right-0 h-1 w-1 bg-gray-700"></span>
</span>
<span class=" relative flex-none p-1 text-center">
<span class="absolute top-0 left-0 h-1 w-1 bg-gray-700"></span>
<span class="bg-gray-400 flex-none px-1 text-center">各種分類</span>
<span class="absolute bottom-0 right-0 h-1 w-1 bg-gray-700"></span>
</span>