If a deeper level of customization is needed, there are widget-specific classes referenced within the jquery.ui.autocomplete.css stylesheet that can be modified. These classes are highlighed in bold below.
Sample markup with jQuery UI CSS Framework classes
<input class="ui-autocomplete-input"/> <ul class="ui-autocomplete ui-menu ui-widget ui-widget-content ui-corner-all"> <li class="ui-menu-item"> <a class="ui-corner-all">item 1</a> </li> <li class="ui-menu-item"> <a class="ui-corner-all">item 2</a> </li> <li class="ui-menu-item"> <a class="ui-corner-all">item 3</a> </li> </ul>
Note: This is a sample of markup generated by the autocomplete plugin, not markup you should use to create a autocomplete. The only markup needed for that is <input/>.