Changing navbar text

[nbaphenom]

This code is in my css how would i change the font to arial black and center it in the navbar .

#navcontainer ul
{
padding: 0px 0px 0px 0px;
margin: 0px 0px 0px 0px;
background-color: #222222;
color: transparent;
float: left;
width: 100%;
font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif;

}

}

#navcontainer ul li { display: inline; }

#navcontainer ul li a
{
change font:Verdana;
height: 38px;
padding: 0.2em 1em;
background-color: #222222;
color: White;
text-decoration: none;
float: left;
}

#navcontainer ul li a:hover
{
background-color: #666666;
color: #fff;
}

http://ball2live.com/index.php?styleid=47