.TopMenu-bar {
      background-color: #f0f0f0;
      padding: 5px 0;
      border-bottom: 1px solid #ccc;
      margin-bottom: 10px;
      z-index: 1000;
      top: 0;
      left: 0;
      right: 0;
      position: fixed;
    }

    .content-wrapper {
      margin-top: 50px;
      padding: 20px;
    }

    .TopMenu-item {
      display: inline-block;
      padding: 5px 10px;
      cursor: pointer;
      position: relative;
    }

    .TopMenu-item:hover {
      background-color: #e0e0e0;
    }

    .TopMenu-dropdown-content {
      display: none;
      position: absolute;
      background-color: #f9f9f9;
      min-width: 200px;
      box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
      z-index: 1;
    }

    .TopMenu-item:hover > .TopMenu-dropdown-content {
      display: block;
    }

    .TopMenu-dropdown-content > a {
      color: black;
      padding: 12px 16px;
      text-decoration: none;
      display: block;
    }

    .TopMenu-dropdown-content > a:hover {
      background-color: #f1f1f1;
    }

    /* Submenu structure */
    .TopMenu-submenu {
      position: relative;
    }

    .TopMenu-submenu-label {
      padding: 12px 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .TopMenu-submenu:hover .TopMenu-submenu-label {
      background-color: #f1f1f1;
    }

    .TopMenu-nested-submenu {
      display: none;
      position: absolute;
      left: 100%;
      top: 0;
      background-color: #f9f9f9;
      min-width: 200px;
      box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
      z-index: 2;
      border: 1px solid #ccc;
      padding: 5px 0;
      border-radius: 4px;
    }

    .TopMenu-submenu:hover .TopMenu-nested-submenu {
      display: block;
    }

    .TopMenu-nested-submenu a {
      color: black;
      padding: 12px 16px;
      text-decoration: none;
      display: block;
    }

    .TopMenu-nested-submenu a:hover {
      background-color: #f1f1f1;
    }