trouble with the 'cascade' in CSS

[george]

I have one style sheet for my site, wherein is the following code for tables:

table { border: 1px solid #000000;border-collapse:collapse;font-family:Arial, Helvetica, sans-serif; width:100%; }table caption { font-size:15px; font-weight:800; text-align:center; background-color:#ADADAD; border-top:1px solid #000000; border-left:1px solid #000000; border-right:1px solid #000000; border-bottom:1px solid #ADADAD; }table td { font-size:12px; font-weight:300; padding-left:5px; }table th { font-size:14px; font-weight:500; text-align:left; background-color:#ADADAD; font-variant:small-caps; border-top:1px solid #ADADAD; margin-left:2px; margin-right:2px;}

It works wonderfully - sometimes. Sometimes I want no border at all. So, for that particular table I write "border="0" in the table tag. The border still appears. What have I done wrong? Thanks

[Ingolme]

Why not write style="border: 0;" in the table tag instead. HTML is only supposed to show structure, not presenation.

[george]

HTML is only suppost to show structure, not presenation.

Thanks Ingolme. That solved one of the problems, and gave me a clue as to how to solve the others. I am posting "HTML is only suppost to show structure, not presenation." to my self support page.