[Lynne]

I don't know what you did, but you have messed up the css somewhere. Probably here:
.tcat {
border: 1px solid black;
}
{
background: {vb:stylevar blockhead_background};
color: {vb:stylevar blockhead_color};
font: bold 10pt verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif;
padding: 6px;
}

That is not valid. I don't want to go compare the two. Can you please only post exactly what was changed instead of the whole files.