nth-Child用法

<ul class="list result-list f-16">
        <li ng-repeat="item in result.data">
            <div class="clearfix">
                <div class="go-left"> {{item.n}}</div>
                <div class="go-right"><span class="accout">{{item.c}}人</span><span class="percent">{{item.p}}%</span>
                </div>
            </div>

            <div id="process">
                <div class="ui-bg">
                    <span style="width:{{item.p}}%" class="ui-label"></span>
                </div>
            </div>
        </li>
    </ul>