Playing around with the CCS for the Fieldset tag I couldn't change the color of the border, so adding my own border and color I found I couldn't get rid the default border or frame which didn't word ether.
I'm confused I see your border is thicker

<fieldset style="border:15px solid; border-color:#C7D6E1; padding:5px; width:50%;">

<legend>LEGEND CAPTION</legend>

<br />

TEXT INSIDE

<br />

</fieldset>


Just change the style.

you can also put the CSS to an extra file

Don't be afraid of the changed Forum's design, I just wanted to show KD how it could look like be using tables ... lol..
haven't read your message before the changes .. sorry

Anyway.. it's a test-forum.. lol..