width: 90%;
        max-width: 700px;
        border: 1px solid #4d4e53;
        border-radius: 2px;
        padding: 10px 14px 10px 10px;
        margin-bottom: 10px;
      }

      section input {
        display: block;
        margin: 5px;
      }

      h2 {
        background-color: #4d4e53;
        color: #fff;
      }
    </style>
    <style class="editable">
      .container {
        column-width: 200px;
      }
      h2 {
        column-span: all;
      }
    </style>
  </head>

  <body>
    <sec