css – 如何将文本放在无序列表中的li元素中

这个列表对我很有用,但< li>中的文字很有用.元素不居中.

< li> s必须自动调整其内容的大小.

#nav-menu {
    font-family: Verdana,Arial,Helvetica,sans-serif;
    height: 30px;
    background-image: url(../img/menu_bg.png);
    background-repeat: repeat-x;
    border-bottom: dotted thin #666666;
    border-top: dotted thin #666666;
    text-align: center;
    width: 800px;
}

#nav-menu ul {
    list-style: none;
    padding: 0;
    margin: auto 0;
}

#nav-menu li {
    float: left;
    border-right: dotted thin #666666;
    list-style: none;
    padding: 0.5em 2em 0.5em 0.75em;
}

#nav-menu li a {
    line-height: 1.5em;
    color: #333333;
    text-decoration: none;
    font-size: 12px;
    font-weight: bold;
    display: block;
}

<div id="nav-menu">
    <ul>
        <li class="current_page_item"><a href="#" title="Home">Home</a>
        <li class="current_page_item"><a href="#" title="Home">Home</a>
        <li class="current_page_item"><a href="#" title="Home">Home</a>
        <li class="current_page_item"><a href="#" title="Home">zxczczxczHome</a>
    </ul>
</div>

解决方法

当您在li的左侧和右侧(分别为0.75em和2em)分配不相等的填充值时,文本无法居中,因为您使用填充将其强制偏离中心.

如果你修改填充：padding：0.5em 1em; (0.5em顶部和底部,左侧和右侧1em)然后它可以居中.

#nav-menu {
    font-family: Verdana,sans-serif;
    height: 30px;
    background-image: url(../img/menu_bg.png);
    background-repeat: repeat-x;
    border-bottom: dotted thin #666666;
    border-top: dotted thin #666666;
    text-align: center;
    width: 800px;
}

#nav-menu ul {
    list-style: none;
    padding: 0;
    margin: auto 0;
}

#nav-menu li {
    float: left;
    border-right: dotted thin #666666;
    list-style: none;
    padding: 0.5em 1em;
}

#nav-menu li a {
    line-height: 1.5em;
    color: #333333;
    text-decoration: none;
    font-size: 12px;
    font-weight: bold;
    display: block;
}

<div id="nav-menu">
    <ul>
        <li class="current_page_item"><a href="#" title="Home">Home</a></li>
        <li class="current_page_item"><a href="#" title="Home">Home</a></li>
        <li class="current_page_item"><a href="#" title="Home">Home</a></li>
        <li class="current_page_item"><a href="#" title="Home">zxczczxczHome</a></li>
    </ul>
</div>

JSFiddle demo以上.