IE下拉菜單超出第一項

Question

我有一個純粹的CSS驅動菜單，有一些IE問題。在IE 8和9中，如果鼠標超出第一項，則下拉會退出。 7中隱藏着其他元素。 （不要太在乎7，但我認爲我也會把它放在那裏）。

標記遵循這個基本結構。

<nav> 
    <ul> 
    <li></li> 
    <li> 
     <ul> 
     <li></li> 
     </ul> 
    </li> 
    </ul> 
</nav> 

CSS

/* Main Navigation */ 
nav#main-nav > .menu { 
    margin: 0; 
    line-height: 100%; 
    padding: .4em 0; 
    overflow: visible; 
    position: relative; 
    background: transparent url(../images/bg-element-gradient.png) repeat-x top left; /* Old browsers */ 
    background: -moz-linear-gradient(top, rgba(219,227,236,1) 10%, rgba(255,255,255,1) 50%, rgba(219,227,236,1) 90%); 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(10%,rgba(219,227,236,1)), color-stop(50%,rgba(255,255,255,1)), color-stop(90%,rgba(219,227,236,1))); 
    background: -webkit-linear-gradient(top, rgba(219,227,236,1) 10%,rgba(255,255,255,1) 50%,rgba(219,227,236,1) 90%); 
    background: -o-linear-gradient(top, rgba(219,227,236,1) 10%,rgba(255,255,255,1) 50%,rgba(219,227,236,1) 90%); 
    background: -ms-linear-gradient(top, rgba(219,227,236,1) 10%,rgba(255,255,255,1) 50%,rgba(219,227,236,1) 90%); 
} 
nav#main-nav > .menu > li { 
    padding: 0 1.9%; 
    line-height: 1.5em; 
    float: left; 
    position: relative; 
    list-style: none; 
} 
nav#main-nav > .menu > li:not(:last-child) { 
    border-right: 1px solid #d1d1d1; 
} 

nav#main-nav > .menu > li.last { 
    margin-right: 0; 
} 

/* dropdown */ 
nav#main-nav > .menu li.expanded:hover > ul { 
    visibility: visible; 
    opacity: 100; 
    -webkit-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -moz-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -ms-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -o-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); /* ease (default) */ 
} 

/* Main-Nav: Level 2 */ 
nav#main-nav > .menu > li.expanded > ul { 
    z-index: 100; 
    list-style: none; 
    display: block; 
    margin: 0; 
    padding: 0; 
    width: 155px; 
    position: absolute; 
    top: 1.6em; 
    left: 0; 
    visibility: hidden; 
    opacity: 0; 
    min-width: 100%; 
    border-left: 1px solid #d1d1d1; 
    border-right: 1px solid #d1d1d1; 
    border-bottom: 1px solid #d1d1d1; 
    font-size: .8em; 
    line-height: 1em; 
    -webkit-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -moz-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -ms-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    -o-transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); 
    transition: all 500ms cubic-bezier(0.250, 0.100, 0.250, 1.000); /* ease (default) */ 
    -webkit-border-bottom-right-radius: 10px; 
    -webkit-border-bottom-left-radius: 10px; 
    -moz-border-radius-bottomright: 10px; 
    -moz-border-radius-bottomleft: 10px; 
    border-bottom-right-radius: 10px; 
    border-bottom-left-radius: 10px; 
    background: -moz-linear-gradient(top, rgba(255,255,255,0.95) 0%, rgba(219,227,236,0.95) 100%); /* FF3.6+ */ 
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0.95)), color-stop(100%,rgba(219,227,236,0.9))); /* Chrome,Safari4+ */ 
    background: -webkit-linear-gradient(top, rgba(255,255,255,0.95) 0%,rgba(219,227,236,0.95) 100%); /* Chrome10+,Safari5.1+ */ 
    background: -o-linear-gradient(top, rgba(255,255,255,0.95) 0%,rgba(219,227,236,0.95) 100%); /* Opera 11.10+ */ 
    background: -ms-linear-gradient(top, rgba(255,255,255,0.95) 0%,rgba(219,227,236,0.95) 100%); /* IE10+ */ 
    background: linear-gradient(top, rgba(255,255,255,0.95) 0%,rgba(219,227,236,0.95) 100%); /* W3C */ 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#e6ffffff', endColorstr='#e6dbe3ec',GradientType=0); /* IE6-9 */ 
    } 
    nav#main-nav > .menu ul li { 
    float: none; 
    margin: 0; 
    padding: 0; 
    } 
    nav#main-nav > .menu > li.expanded > ul > li { 
    display: block; 
    padding: 0 0 1em 1.1em; 
    z-index: 101; 
    } 
    nav#main-nav >.menu > li.expanded > ul > li:first-child { 
    padding-top: 1em; 
    } 
    nav#main-nav > .menu > li.expanded > ul > li > a { 
    width: 100%; 
    display: block; 
    padding: 0 1.1em .25em .25em; 
    } 
    nav#main-nav > .menu > li:last-child > ul { 
    position: absolute; 
    left: -75px; 
    } 
    nav#main-nav > .menu:after { 
    content: "."; 
    display: block; 
    clear: both; 
    visibility: hidden; 
    line-height: 0; 
    height: 0; 
    } 
    html[xmlns] .menu { 
    display: block; 
    } 

    * html .menu { 
    height: 1%; 
    } 

住看到它，請訪問recognia.com。

Answer 1

:not和:last-child僞類在IE7/IE8中不受支持。也許這就是奇怪行爲的原因。我使用IE8測試了現場示例，最後一個菜單項似乎起作用，但不是其他項。

，您可以檢查IE選擇兼容性這裏：http://msdn.microsoft.com/en-us/library/cc351024(v=vs.85).aspx

希望這些信息可以幫助您解決問題。

編輯：

新的想法：當你越過滑塊，而不是當你通過的第一項的菜單撤退！你有層問題。