Easy styling of all Td's in a table or in a div

Put a selector on the table tag:

<table class="my-special-table">
<tr><td></td></tr>
</table>

table.my-special-table td { style it up! }

If your table has a specific attribute such an as ID, you can reference it in CSS specifically:

<table id="myStyledTable">
    <tr>
        <td>...

Like so:

#myStyledTable td {

}

Use this:

#table-id td {
 /* some css */ 
}