Html 三级导航菜单未隐藏

我似乎无法得到3级菜单隐藏，直到鼠标超过请看截图

ul.menu2 { display: none; } 
ul.menu li:hover > ul { display: block; } 
ul.menu { background: #efefef; background: linear-gradient(top, #efefef 0%, #bbbbbb 100%); background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%); background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%); box-shadow: 0px 0px 9px rgba(0,0,0,0.15); padding: 0 20px; border-radius: 10px; list-style: none; position: relative; display: inline-table; } 
ul.menu:after { content: ""; clear: both; display: block; } 
ul.menu li { float: left; } 
ul.menu li:hover { background: #4b545f; background: linear-gradient(top, #4f5964 0%, #5f6975 40%); background: -moz-linear-gradient(top, #4f5964 0%, #5f6975 40%); background: -webkit-linear-gradient(top, #4f5964 0%,#5f6975 40%); } 
ul.menu li:hover a { color: #fff; } 
ul.menu li a { display: block; padding: 10px 20px; color: #757575; text-decoration: none; } 
ul.menu2 { background: #5f6975; border-radius: 0px; padding: 0; position: absolute; top: 100%; list-style: none; z-index: 101; } 
ul.menu2 li { float: none; border-top: 1px solid #6b727c; border-bottom: 1px solid #575f6a; position: relative; } 
ul.menu2 li a { padding: 15px 20px; color: #fff; } 
ul.menu2 li a:hover { background: #4b545f; } 
ul.menu3 { position: absolute; left: 100%; top:0; list-style: none; }