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嗨我正在寻找一个类似于雅虎的导航栏,但是我找不到一个例子。我正在寻找的一些功能是一个粘性导航栏,当用户滚动时,它看起来像是从它的位置弹出。

CSS

* { margin: 0; padding: 0; }
html { overflow-y: scroll; }
body { 
    font: 62.5% Arial, Helvetica, sans-serif;
    background: #FFFFFF;
}

ul { list-style: none inside; }
p { font-size: 1.2em; line-height: 1.2em; margin-bottom: 1.2em; }
a img { border: none; }

.floatleft { float: left; }
.floatright { float: right; }
.clear { clear: both; }

a { 
    text-decoration: none; 
    outline: none;
    color: #335588;
    }
    a:hover {
        text-decoration: underline;
    }


    #top-bar {
        background: #330000; 
        min-height: 60px;
        padding: 0 10px;
        font-size: 1.3em;
        font-weight: bold;
    }

    #right-side {
        float: right;
        padding-top: 15px;
        }
    #right-side img {
        border: 1px solid white;
        vertical-align: middle;
        }
    #right-side a {
        color: white;
        border-left: 1px solid white;
        height: 10px;
        padding-left: 10px;
        }
    #right-side a.first {
        border: none;
        padding: 0;
        }

    #left-side {
        float: left;
        padding-top: 15px;
        padding-left: 20px;
        color: white;
        font-size: 20px;
        }


    #sub-menu {
        background: white;
        min-height: 20px;
        padding: 5px 10px 0 10px;
        }
    #sub-menu ul {
        display: block;
        color: #000000;
        }
    #sub-menu ul li {
        height: 18px;
        padding: 5px 10px 0 5px;
        position: relative;
        float: left;
        margin-right: 10px;
        color: #000000;
        }
    #sub-menu ul li:hover {
        background: red;
        height: 10px;
        }
    #sub-menu ul li a {
        display: block;
        float: left;
        height: 23px;
        position: relative;
        top: -5px;
        right: -5px;
        padding-right: 3px;
        color: #000000;
        font-weight: bold;
        font-size: 1.1em;
        text-decoration: none;
        }

    #sub-menu ul li a span {
        position: relative;
        top: 6px;
        }
    #sub-menu ul li ul {
        display: none;
        position: absolute;
        top: 29px;
        left: 0px;
        width: 150px;
        border: 1px solid #ccc;
        background: white;
        padding: 10px 0 0 0;
        }
    #sub-menu ul li ul li {
        float: none;
        padding: 0; margin: 0;
        height: 100%;
        }
    #sub-menu ul li ul li:hover {
        background: none;
        }
    #sub-menu ul li ul li a {
        display: block;
        float: none;
        margin-left: -5px;
        padding: 5px 0 0 10px;
        width: 140px;
        }
    #sub-menu ul li ul li a:hover {
        background: #000000;
        }

HTML

<div id="top-bar">
    <img src="images/logo.png" alt="TEST" class="floatleft" />  
        <div id="left-side">
            TEST
        </div>

        <div id="right-side">
            <a href="#">Logout</a>          
        </div>
    </div>

    <div id="sub-menu">
        <ul>
                       <li></li>
                       <li></li>
                       <li></li>
        </ul>
    </div>

这是一个更新的 jsfiddle,我得到了显示的线路,但它仍然不会粘 jsfiddle.net/cc48t/1549

4

1 回答 1

2

它可能不是纯粹的 CSS。使用 jQuery,你可以这样写:

$(window).scroll(function() {
    $(this).scrollTop() > 0 ? $('body').css('background', '#f0f') : $('body').css('background', '#0f0');
}).scroll();

小提琴

于 2013-09-17T18:23:21.203 回答