Skeuomorphic Timeline コンポーネント

<div class="container mx-auto px-4 py-8">

  <!-- Skeuomorphic Timeline -->
  <div class="relative">
    <!-- Vertical Line (mimics a physical line) -->
    <div class="border-r-4 border-gray-300 dark:border-gray-700 absolute h-full top-0 left-1/2 transform -translate-x-1/2"></div>

    <!-- Timeline Items -->
    <div class="mb-8 flex justify-between items-center w-full right-timeline">
      <div class="order-1 w-5/12"></div>
      <div class="order-1 w-5/12 px-1 py-4 text-right">
        <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xl px-6 py-4 border border-gray-200 dark:border-gray-700">
          <h3 class="mb-3 font-bold text-gray-800 dark:text-white text-xl">Event Title 1</h3>
          <p class="text-sm leading-snug tracking-wide text-gray-900 dark:text-gray-300 text-opacity-100">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </p>
        </div>
      </div>
      <!-- Timeline Dot (mimics a physical marker) -->
      <div class="order-1 bg-gray-300 dark:bg-gray-700 rounded-full w-8 h-8 absolute left-1/2 transform -translate-x-1/2 z-10"></div>
    </div>

    <div class="mb-8 flex justify-between items-center w-full left-timeline">
       <div class="order-1 w-5/12 px-1 py-4 text-left">
        <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xl px-6 py-4 border border-gray-200 dark:border-gray-700">
          <h3 class="mb-3 font-bold text-gray-800 dark:text-white text-xl">Event Title 2</h3>
          <p class="text-sm leading-snug tracking-wide text-gray-900 dark:text-gray-300 text-opacity-100">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </p>
        </div>
      </div>
      <div class="order-1 w-5/12"></div>
       <!-- Timeline Dot (mimics a physical marker) -->
      <div class="order-1 bg-gray-300 dark:bg-gray-700 rounded-full w-8 h-8 absolute left-1/2 transform -translate-x-1/2 z-10"></div>
    </div>

     <div class="mb-8 flex justify-between items-center w-full right-timeline">
      <div class="order-1 w-5/12"></div>
      <div class="order-1 w-5/12 px-1 py-4 text-right">
        <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xl px-6 py-4 border border-gray-200 dark:border-gray-700">
          <h3 class="mb-3 font-bold text-gray-800 dark:text-white text-xl">Event Title 3</h3>
          <p class="text-sm leading-snug tracking-wide text-gray-900 dark:text-gray-300 text-opacity-100">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </p>
        </div>
      </div>
       <!-- Timeline Dot (mimics a physical marker) -->
      <div class="order-1 bg-gray-300 dark:bg-gray-700 rounded-full w-8 h-8 absolute left-1/2 transform -translate-x-1/2 z-10"></div>
    </div>

      <div class="mb-8 flex justify-between items-center w-full left-timeline">
       <div class="order-1 w-5/12 px-1 py-4 text-left">
        <div class="bg-white dark:bg-gray-800 rounded-lg shadow-xl px-6 py-4 border border-gray-200 dark:border-gray-700">
          <h3 class="mb-3 font-bold text-gray-800 dark:text-white text-xl">Event Title 4</h3>
          <p class="text-sm leading-snug tracking-wide text-gray-900 dark:text-gray-300 text-opacity-100">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </p>
        </div>
      </div>
      <div class="order-1 w-5/12"></div>
       <!-- Timeline Dot (mimics a physical marker) -->
      <div class="order-1 bg-gray-300 dark:bg-gray-700 rounded-full w-8 h-8 absolute left-1/2 transform -translate-x-1/2 z-10"></div>
    </div>

  </div>
</div>

<style>
  /* Styles for a simple skeuomorphic look */
  .left-timeline .bg-white,
  .right-timeline .bg-white {
    box-shadow: 5px 5px 10px #bebebe, -5px -5px 10px #ffffff;
  }

   .dark .left-timeline .bg-gray-800,
  .dark .right-timeline .bg-gray-800 {
    box-shadow: 5px 5px 10px #1a1a1a, -5px -5px 10px #2e2e2e;
  }

  .left-timeline .bg-white.dark\:bg-gray-800,
  .right-timeline .bg-white.dark\:bg-gray-800 {
     border-color: #d1d5db; /* subtle light border */
  }

   .dark .left-timeline .bg-white.dark\:bg-gray-800,
  .dark .right-timeline .bg-white.dark\:bg-gray-800 {
     border-color: #4b5563; /* subtle dark border */
  }


   @media (max-width: 768px) {
      .left-timeline, .right-timeline {
        justify-content: flex-end;
      }

      .left-timeline .w-5/12,
      .right-timeline .w-5/12 {
        width: 100%;
      }

       .left-timeline .px-1,
      .right-timeline .px-1 {
        padding-left: 1rem;
         padding-right: 1rem;
      }


      .left-timeline .text-left,
      .right-timeline .text-right {
        text-align: left;
      }

      .left-timeline .order-1,
      .right-timeline .order-1 {
        order: 1;
      }

      .left-timeline .w-5/12:nth-child(1),
      .right-timeline .w-5/12:nth-child(1) {
        order: 2;
      }


      .left-timeline .rounded-full,
      .right-timeline .rounded-full {
        position: relative;
        left: auto;
        transform: none;
        margin-right: 1rem;
      }

       .border-r-4 {
        border-right-width: 0;
        border-left-width: 4px;
        left: 1rem;
      }
  }
</style>