header nav.navbar .container-fluid {
    background-image: url('../_shared/header2.jpg');
    background-position: center center;
  }

    #table_ex1 th {
      text-align: center;
      vertical-align: middle;
    }

    #table_ex1 td:nth-child(1) {
      font-weight: bold;
      color: #fff;
      background-color: var(--third);;
      vertical-align: middle;
    }

        .panel {
          margin-top: 24px;
          margin-bottom: 48px;
        }