我在侧面导航下拉菜单中遇到问题.链接和CSS如下:
http://www.449design.net/clientpages/gamiing/
<nav id="nav">
<div class="menu-main_nav-container"><ul id="menu-main_nav" class="menu"><li id="menu-item-270" class="menu-item menu-item-type-post_type menu-item-object-page current-menu-item page_item page-item-6 current_page_item menu-item-270"><a href="http://449design.net/clientpages/gamiing/">Home</a></li>
<li id="menu-item-271" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-271"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/">About Us</a>
<ul class="sub-menu">
<li id="menu-item-283" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-283"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/history/">History</a></li>
<li id="menu-item-282" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-282"><a href="http://449design.net/clientpages/gamiing/home/mandate-and-mission/">Mission and Mandate</a></li>
<li id="menu-item-291" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-291"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/what-gamiing-does/">What Gamiing Does</a></li>
<li id="menu-item-290" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-290"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/our-board/">Our Board</a></li>
<li id="menu-item-289" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-289"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/corporate-reference-manual/">Corporate Reference Manual</a></li>
<li id="menu-item-288" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-288"><a href="http://449design.net/clientpages/gamiing/about-gamiing-nature-centre/our-shop/">Our Shop</a></li>
<li id="menu-item-287" …