<!DOCTYPE html> <!-- webkit-test-runner [ LayoutFormattingContextEnabled=true LayoutFormattingContextIntegrationEnabled=false ] -->
<style>
table {
    font-size: 10px;
}
</style>
<table>
<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>
<tr><td colspan=2>1</td><td colspan=2>2</td></tr>
<tr><td colspan=3>1</td><td>2</td></tr>
<tr><td colspan=4>1</td></tr>
</table>