Have a look at this picture
alt text http://www.abbeylegal.com/downloads/2009-04-01/web%20part%20top%20line.jpg
Does anyone know what css style is used for the line/border highlighted in red? I'm trying to over ride it in my custom style sheet but I’m not having any luck, so far I’ve tried overiding these different styles...
.ms-viewheadertr
.ms-vh2
.ms-vb
.ms-vb2
.ms-unselectedtitle
.ms-summarystandardbody
which is changing the display but not the border, it's enough to make you go mad!
Update:
.ms-WPHeader is indeed one of the css classes, however if you set the border-style to none there is still a line that appears; just a little thinner. I can use .ms-viewheadertr to completely remove the header but just can't seem remove this one line.