h1 {
        border-bottom: 1px solid #ddd;
        margin-bottom: 2rem;
      }

      .example {
        padding: 2rem;
        border: 1px solid #ddd;
      }

      .example + h1 {
        margin-top: 5rem;
      }

      .example + h3 {
        margin-top: 3rem;
      }
    </style>
  </head>
  <body>
    <div class="row column">
      <h1>Advanced Nested Menu's</h1>
      <h3>Nested Form within Accordion Menu</h3>
      <div class="example" style="max-width: 450px">
        <ul class="menu vertical ac