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I'm turning a 2 level nav into a 3 level and running into a few difficulties.

The 3rd level displays where and as predicted but when the 'grandparent' is hovered over, not the parent of the items I want displayed.

I've been fooling around with the css for a while and I cannot get it to respond how I'd like.

Any help is appreciated.

There is a fiddle as my explanation might be somewhat lacking.

http://jsfiddle.net/6TGaf/

Code from fiddle:

    #nav{
    background: #bada55;
    width: 99%;
    margin-top:-5px;
}

#nav ul{
    list-style: none;
    margin: 0;
    padding: 0;
    height: 40px;
}

#nav ul li{
    /*child elements positioned absolutley will be relative to this*/
    position: relative;
    border-top: 1px solid #e9e9e9;
    float: left;

}

#nav a{
    color: ghostwhite;
    padding: 12px 0px;
    /*fill hori space*/
    display: block;
    text-decoration: none;
/*apply transition to background property, taking 1s to change it
*/
    transition:padding 1s, background 1s;
    -moz-transition:padding 1s, background 1s;
    -webkit-transition:padding 1s, background 1s;
    -o-transition:padding 1s, background 1s;

    font-family:tahoma;

    font-size:13px;
    text-transform:uppercase;
    padding-left:20px;
}

/*hover pseduo class*/
#nav a:hover{
    /*
    RGBA background for transparancy:
    last number(0.05) is the transparency
    */
    padding-left:35px;
    background: RGBA(255,255,255,0.05);
    color:#fff;
}

#nav ul li:hover ul{
    /*diplay when hovered*/
    display: block;
}

#nav ul ul{
    position: absolute;
    left: 0px;
    top: 40px;
    border-top: 1px solid #e9e9e9;
    display: none;
    /*width: 304px;*/
    z-index: 1;
}

#nav ul ul li{
    width: 150px;
    background: #f1f1f1;
    border: 1px solid #e9e9e9;
    border-top: 0;
    /*float:left;*/

}

#nav ul ul li a{
    color:#000000;
    font-size:12px;
    text-transform:none;
}

#nav ul ul li a:hover {
    color:#929292;
}

/*3rd level...*/
#nav ul ul ul{
    position: absolute;
    left: 150px;
    top: 0px;
    border-top: 1px solid #e9e9e9;
    display: none;
    /*width: 304px;*/
    z-index: 1;
}

#nav ul ul ul li{
    width: 150px;
    background: #f1f1f1;
    border: 1px solid #e9e9e9;
    border-top: 0;
}

#nav ul ul ul li a{
    color:#000000;
    font-size:12px;
    text-transform:none;
}

#nav ul ul ul li a:hover {
color:#929292;
}

#nav ul ul li:hover ul{
/*diplay when hovered*/
display: block;
}

<nav id = "nav">
    <ul>
        <li>
            <a href="#">1.1</a>
            <ul>
                <li>
                    <a href="#">1.1.1</a>
                    <ul>
                        <li><a href="#">1.1.1.a</a></li>
                        <li><a href="#">1.1.1.b</a></li>
                    </ul>
                </li>

                <li><a href="#">1.1.2</a></li>
                <li><a href="#">1.1.3</a></li>

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

4

1 回答 1

1

在你的 CSS 中，

#nav ul li:hover ul{
   display: block;}

上面的代码在第一个 li 元素悬停时显示 ul 块中的所有元素。在这种情况下，徘徊在 1.1。由于孙子 (1.1.1a) 也属于上块 ul，即使是显示。

因此，要解决此问题，请添加代码段：

#nav li:hover ul ul{
    display:none;
    }
#nav li:hover ul, #nav li li:hover ul{
    display:block;
    }

所以上面的代码是什么意思，当一个悬停在 li 元素上时，需要阻止下面 2 层的元素，当一个悬停在 li 元素上时，只需要显示直接的 ul 元素。

检查http://jsfiddle.net/sxzR8/1/以获取工作示例。

于 2013-07-30T10:48:50.337 回答