3 <table cellpadding=
"0" cellspacing=
"0">
6 <table style=
"table-layout: fixed;" cellpadding=
"0" cellspacing=
"0">
8 <td style=
"background: lightgreen;">a
</td>
13 <table style=
"table-layout: fixed;" cellpadding=
"0" cellspacing=
"0">
15 <td style=
"background: lightblue;">b
</td>