修改div下第二个dt下的dl的高 (一个挺难又简单 的小jquery)

  

<div class="city_main">    <p class="cate_title">所有城市</p>    <div class="hd_provincelist">        <div class="hd_province_detail clearfix" id="province_detail_uid">            <foreach name="areas.area" item="are">                <dl class="clearfix">                    <dt>{$are}：</dt>                    <foreach name="areas.site" item="ar">                        <if condition="$ar['area'] eq $are">                            <dd class="dd_detail"><a href="//{$ar['second_url']}.{$server_name}?mark=1">{$ar['city']}</a></dd>                        </if>                    </foreach>                </dl>            </foreach>        </div>    </div></div><script>      $("#province_detail_uid dl:nth-child(2) dt").css("height","45px");</script>