通知コンポーネント

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  <h2 class="text-xl font-bold mb-4 text-teal-400">Notifications</h2>
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      <p class="flex-grow"><span class="font-semibold text-purple-400">John Doe</span> liked your post.</p>
      <span class="text-gray-500 text-sm">2 min ago</span>
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      <p class="flex-grow"><span class="font-semibold text-pink-400">Jane Smith</span> commented on your photo.</p>
      <span class="text-gray-500 text-sm">1 hour ago</span>
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      <img src="https://randomuser.me/api/portraits/men/78.jpg" alt="User Avatar" class="w-10 h-10 rounded-full mr-4">
      <p class="flex-grow"><span class="font-semibold text-yellow-400">Peter Jones</span> started following you.</p>
      <span class="text-gray-500 text-sm">3 hours ago</span>
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