You need to make more use of the features CSS has to be more selective about what styles get applied to what elements. You can then define styles that don't just affect all tags of a particular type.
CSS selectors can get quite complex, but simple use of classes is a good start.
Something like:
<td class="MyTD">
...
</td>
in your HTML, and
[note the DOT indicating this is a class selector]
.MyTD
{
text-align:left;
}
in your CSS. MyTD is just an identifier for a CSS class - substitute whatever you find descriptive.
W3Schools is a good general resource for CSS, HTML and lots of other web stuff. See
http://www.w3schools.com/css/css_reference.asp[
^]