Question : why the html table differences between IE7 and IE 8

Dear HTML experts,
I have a client response form (within a HTML table) on my web page which renders fine in IE8 but adds additional vertical spacing to each cell in IE7, thus extending the table further down the page.
I've tried numerous tweaks but to no avail.
The URL of the page is www.tocotraining.co.uk/client_response.html
I've set table border to "1" to display the structure of the cell.
HTML and CSS files are attached.
Any help would be most welcome.

Attachments:

client-response.html (12 KB) (File Type Details) 

HTML form within a table

styles.css (11 KB) (File Type Details) 

Stylesheet for attached HTML form page

Answer : why the html table differences between IE7 and IE 8

If the above doesn't work you can try:
report.Subreports.Item("ProposalCostNotes.rpt").RecordSelectionFormula = mySelectionFormula