简单的CSS选项卡 – 需要在活动选项卡上中断边框

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HTML

<div id="navcontainer">
    <ul id="navlist">
        <li id="active"><a href="#" id="current">Item one</a></li>
        <li><a href="#">Item two</a></li>
        <li><a href="#">Item three</a></li>
        <li><a href="#">Item four</a></li>
        <li><a href="#">Item five</a></li>
    </ul>
</div>

CSS

#navlist
{
    padding: 3px 0;
    margin-left: 0;
    border-bottom: 1px solid #778;
    font: bold 12px Verdana,sans-serif;
}

#navlist li
{
    list-style: none;
    margin: 0;
    display: inline;
}

#navlist li a
{
    padding: 3px 0.5em;
    margin-left: 3px;
    border: 1px solid #778;
    border-bottom: none;
    BACkground: #DDE;
    text-decoration: none;
}

#navlist li a:link { color: #448; }
#navlist li a:visited { color: #667; }

#navlist li a:hover
{
    color: #000;
    BACkground: #AAE;
    border-color: #227;
}

#navlist li a#current
{
    BACkground: white;
    border-bottom: 1px solid white;
}