<style>
@media (max-width: 768px) {
  #sortableColumns {
    max-width: 100%;
  }

  #sortableColumns li {
    flex-direction: row;
    align-items: center;
    padding: 12px 16px;
    font-size: 16px;
    margin: 8px 0;
  }

  #sortableColumns input[type="checkbox"] {
    width: 22px;
    height: 22px;
    margin-right: 15px;
    flex-shrink: 0;
  }

  #sortableColumns label {
    flex-grow: 1;
    font-size: 16px;
  }
}

    body {
        font-family: Arial, sans-serif;
        background-color: #f4f6f8;
        margin: 30px;
        color: #333;
    }

    h2 {
        color: #2c3e50;
    }

    form {
        background-color: #fff;
        padding: 20px;
        border-radius: 12px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
        margin-bottom: 30px;
    }

    fieldset {
        border: 1px solid #ccc;
        border-radius: 8px;
        padding: 15px;
        margin-bottom: 20px;
    }

    legend {
        font-weight: bold;
        color: #2c3e50;
    }

    #sortableColumns {
        list-style-type: none;
        padding: 0;
        max-width: 500px;
    }

    #sortableColumns li {
        background-color: #ecf0f1;
        margin: 5px 0;
        padding: 8px 12px;
        border-radius: 6px;
        border: 1px solid #bdc3c7;
        cursor: move;
        display: flex;
        align-items: center;
    }

    #sortableColumns input[type="checkbox"] {
        margin-right: 10px;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        background-color: #fff;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    th {
        background-color: #3498db;
        color: white;
        padding: 10px;
        text-align: left;
    }

    td {
        padding: 10px;
        border-bottom: 1px solid #ddd;
    }

    tr:hover {
        background-color: #f1f1f1;
    }

    button {
        padding: 10px 18px;
        background-color: #27ae60;
        color: white;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        font-size: 14px;
    }

    button:hover {
        background-color: #219150;
    }

    label {
        display: inline-block;
        margin-right: 15px;
        font-weight: 500;
    }

    h3 {
        margin-top: 20px;
        color: #34495e;
    }
</style>
