Additional CSS for H2, H3 tags has no effect

[gaiusrufus]

i removed it, but i wanted to integrate this:

Style Manager -> Style and Templates -> {Your Theme Name} -> Main CSS -> Additional CSS (at the very bottom of the page) and enter:
h2.seovb2 {font-family: Arial; font-size: 20px; color: #000000; font-weight: bold;}
h3.seovb3 {font-family: Arial; font-size: 16px; color: #000000; font-weight: bold;}
Hit Save, and then from the drop down in the top left corner, select Edit Templates
Open forumdisplay templates ->FORUMDISPLAY and after $navbar add the following:
<div style=?text-align:center;?>
<h2 class=?seovb2″>$foruminfo[title_clean]</h2>
<h3 class=?seovb3″>$foruminfo[description]</h3>
</div>
Hit save and then open the SHOWTHREAD template and perform a similar edit using the following:
<div style=?text-align:center?>
<h2 class=?seovb2″>$thread[title]</h2>
<h3 class=?seovb3″>$foruminfo[title_clean]</h3>
</div>

the text displays, but i can not influence its font/size, so the css doenst work..