differently coloured columns

by thebabydino

HTML

<table id = "myTable">
        <thead>
            <tr>
                <th>
                     Name
                </th>
                <th>
                    Address
                </th>
        <th>
                    Age
                </th>
            </tr>
        </thead>
        <tr>
            <td>
                Lijo
            </td>
            <td>
                India
            </td>
        <td>
                27
            </td>
        </tr>
    </table>

CSS

th,td{background:yellow}
th:first-child,td:first-child{background:red}
th:last-child,td:last-child{background:blue}