div#tipDiv {
    padding:4px;
    color:#000; font-size:12px; line-height:1.2;
    background-color:#e5e5e5; border:2px solid #A3A3A3; 
    width:350px; 
}

/* example demonstrating applying styles to 'tipContent' for tooltip display
i.e., div.tipContent ul wouldn't work (more info in online documentation) */
div#tipDiv ul.tipContentList {
    margin:0; padding:0; list-style:none;
}