Barra lateral de neumorfismo

<div class="flex h-screen bg-gray-200 dark:bg-gray-800">

  <!-- Sidebar -->
  <div class="flex flex-col w-64 bg-gray-200 dark:bg-gray-800 rounded-2xl shadow-neumorphism dark:shadow-neumorphism-dark m-4">
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    <div class="mt-8">
      <nav>
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          About
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        <div class="text-gray-700 dark:text-gray-200">
          John Doe
        </div>
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  <div class="flex-1 p-8">
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</div>

<style>
  .shadow-neumorphism {
    box-shadow: 7px 7px 15px #a7a7a7, -7px -7px 15px #ffffff;
  }
  .dark .shadow-neumorphism-dark {
    box-shadow: 7px 7px 15px #414141, -7px -7px 15px #b9b9b9;
  }
  .shadow-neumorphism-inset {
    box-shadow: inset 5px 5px 10px #a7a7a7, inset -5px -5px 10px #ffffff;
  }
  .dark .shadow-neumorphism-dark-inset {
    box-shadow: inset 5px 5px 10px #414141, inset -5px -5px 10px #b9b9b9;
  }
</style>