block border ??

[Mutt]

I'm trying to edit the block border around the post form on newthread, reply, quick reply, etc and I'm not having any luck.

I've thickened up the block header border by changing the border width but I can't figure out how to thicken up the 2 sides & bottom of the block row border. i can see in the style guild that the var I need to change is block_border but changing the settings there seem to do nothing. i made sure to change all settings for width, color, units, & style but I still just get a thin black line.

anyone know how to change this border? i've attached a screen cap of the stylevar guide identifying the var & a screen cap w/ a red arrow showing what i'm trying to edit. man the new CSS is driving me nuts.

thanks in advance