scoped style equivalent in html4

I have a piece of HTML that I need to modify and I need to keep the changes minimal (out of CSS). All I need to do is to hide a table cell until something happens. So I went ahead and added the style tag as shown below:\[code\]<td style="display:none;">\[/code\]However, this causes the style class to reset, e.g. the cell which used to be vertically center-aligned is now top-aligned, and so on. My understanding is that this is because the style attribute overrides the default CSS stuff. Is that correct? If yes, how can I prevent it? I just need to add the display attribute, not reset the rest of style attributes.I spend some time searching online and noticed that HTML5 has introduced something called scoped style. Is there an HTML4 easy-to-do equivalent for it?
 
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