<!DOCTYPE html>
<html lang="en">
<style>
tr { background-color: rgb(255, 0, 0); }
td:not(#remove) { background-color: green; }
</style>
<title>CSS Test Reference</title>
<p>Test passes if you see three green cells and no red below.</p>
<table>
    <tr>
        <td>A1</td>
        <td>A2</td>
    </tr>
    <tr>
        <td>B1</td>
    </tr>
</table>
</html>