i have a table and when i add the following css it does not work
<table>
<tr><td>content</td></tr>

<div style="float: left; width: 100%; height: 5px;">content</div>

<tr><td>content</td></tr>
</table>

if i add
<tr><td><div style="float: left; width: 100%; height: 5px;">content</div></td></tr>

this also does not work i have tried
<tr><td valign="top" height="5">content</td></tr> but in ie it is taking more than 5px

The <tr> tag represents a row in the table and the <td> a cell in the table. You can't add content (your div tag) in between the rows. And besides, your css code is placed in the div tag, so it would only affect the div tag, not the table.

What exactly are you trying to do?

Lizciz is right. you can add data only between <td> and </td>

Hello ,
Float left and right will not work inside the table untill width to the td is not set

even though to floats left we can see output untill td 's width is extended.