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我只是想知道每当用户更改浏览器窗口的大小时，如何动态更改顶部菜单的大小（“线性代数”，“离散数学”）？我尝试将宽度更改为百分比，但没有成功。

<html>
<head>
    <title></title>
    <link type = "text/css" rel = "stylesheet" href = "home.css"/>
</head>
<body>
    <div id = "menu">
        <ul>
            <li><a href = "#"> Discrete Maths </a>
                <ul>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                </ul><!-- end of the inner ul-->
            </li><!-- end of the main li-->
        </ul><!-- end of the main ul-->

        <ul>
            <li><a href = "#"> Linear Algebra </a>
                <ul>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                </ul><!-- end of the inner ul-->
            </li><!-- end of the main li-->
        </ul><!-- end of the main ul-->

        <ul>
            <li><a href = "#"> Calculators </a>
                <ul>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                    <li><a href = "#">Link item</a></li>
                </ul><!-- end of the inner ul-->
            </li><!-- end of the main li-->
        </ul><!-- end of the main ul-->

        <ul>
            <li><a href = "#" id = "search"> Search </a>
                <ul>
                    <li><a href = "#">
                            <input type = "text" id = "text"></input>
                            <input type = "button" value = "szukaj"></input>
                        </a>
                    </li>
                </ul>
            </li><!-- end of the main li-->
        </ul><!-- end of the main ul-->
    </div><!-- end of the menu-->
</body>
</html>

这是我的CSS

body {
    background-color: #562500;
    background: url('image_for_website.jpg') repeat;
}
#menu {    
    width: 70%;
    height: 35px;
    margin-left: auto;
    margin-right: auto;
    margin-top: -5px;
    padding: 3px;
    border-radius: 0px 0px 3px 3px;
            box-shadow: 1px 2px 3px 2px #1F0000;
       -moz-box-shadow: 1px 2px 3px 2px #1F0000;
    -webkit-box-shadow: 1px 2px 3px 2px #1F0000;
    text-shadow: 1px 1px 1px black;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.2);
}
#menu ul {
    margin: 0;
    padding: 0;
    line-height: 30px;
}
#menu li {
    margin: 0px;
    padding: 0px;
    list-style: none;
    float: left;
    position: relative;
    border-right: 2px solid black;
}
#menu ul li a {
    text-align: center;
    font-family: "Comic Sans MS", cursive, sans-serif;
    text-decoration: none;
    height: 30px;
    width: 234px;
    display: block;
    color: rgba(255,255,255,1);
    height: 39px;
}
#menu ul ul {
    position: absolute;
    visibility: hidden;
    line-height: 40px;
    top: 39px;
}
#menu ul li: hover ul {
    visibility: visible;
    background: rgba(51,23,0,1.0);
}
#menu ul li: hover ul li {
    border: 1px inset black;
    margin: 0px -1px;
}
#menu ul li: hover ul li a: hover {
    background: rgba(64,21,0,0.5);
}

在这里小提琴：http: //jsfiddle.net/fTe8V/

4

1 回答 1

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您可以使用 jQuery

$(window).resize(function(){
    // You could do some checks here to see what size the window is
    var height = $(this).height();
    $(menu).css('height','20px'); // Set the height of the menu
});
于 2013-04-25T22:08:34.433 回答