WHMCS Wordpress Integration CSS Help

Hello,

Is there any instructions or examples of css to make the [wcp_menu] and [wcp_quick_nav] look better than we have here: http://www.webhostingjunkies.com/client-portal?whmcsportalpage=aHR0cHM6Ly9tYW5hZ2VyLndlYmhvc3RpbmdqdW5raWVzLmNvbS9jbGllbnRhcmVhLnBocA%3D%3D

Here is the CSS we are using:

/* WHMCS Custom css*/

.whmcs_error {
border-radius: 3px;
border: 1px solid #FF0000;
background-color: #FFBCBC;
padding: 5px 10px;
margin: 5px 0px 10px;
font-size: 1.2em;
}
ul
{
list-style-type:none;
margin:0;
padding:0;
}
li
{
float:left;
}
{
background-color:#7A991A;
}
li
{
display:inline;
}

</style>

Any help is greatly appreciated. Now that we got it running finally we want to make it look pretty. Thanks in advance.