请大神赐教~

1. foot部分为什么直接设置text-align实现不了文字水平居中效果呢?

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title></title>
  <style type="text/css">
  .head{width:80%;height:100px;background:black;margin:0 auto;overflow:hidden;}
  .head img{float:left;}
  .head ul{float:right;color:white;list-style:none;font-weight:bold;}
  .head ul li{float:left;padding:25px 25px 15px 25px;}
  .content{width:80%;height:auto;margin:0 auto;overflow:hidden;}
  .content .lside{width:50%;background:#add8e6;height:400px;float:left;}
  .content .rside{width:50%;background:#add8e6;height:400px;float:right;}
  .lside dl{padding-top:35px; padding-left:200px;}
  .lside dt{font-size:20px;font-weight:bold;padding-bottom:10px;padding-left:40px;}
  .lside dd{margin-bottom:10px;}
  .lside span{background-color:pink;}
  .rside dl{padding-top:35px; padding-left:50px;}
  .rside dt{font-size:20px;font-weight:bold;padding-bottom:10px;padding-left:40px;}
  .rside dd{margin-bottom:10px;}
  .foot{width:80%;margin:0 auto;height:60px;background:black;line-height:60px;/*text-align:center;*/}
  .foot ul{list-style:none;color:white;margin-left:220px;}
  .foot ul li{float:left;padding-left:15px;font-size:10px;}
      /*此处写代码*/
  </style>
</head>
<body>
  <div class="head">
  <div><img src="http://climg.mukewang.com/58c0d2d900016ce303000100.png"/></div>
  <div>
      <ul>
          <li>课程</li>
          <li>职业路径</li>
          <li>实战</li>
          <li>猿问</li>
          <li>手记</li>
      </ul>
  </div>
   </div>
 <div class="content">
     <div class="lside">
         <dl>
             <dt>课程推荐
                 <dd><span>职业路径</span>&nbsp;HTML5与CSS3实现动态页面</dd>
                 <dd><span>职业路径</span>&nbsp;HTML5与CSS3实现动态页面</dd>
                 <dd><span>职业路径</span>&nbsp;HTML5与CSS3实现动态页面</dd>
                 <dd><span>职业路径</span>&nbsp;HTML5与CSS3实现动态页面</dd>
                 <dd><span>职业路径</span>&nbsp;HTML5与CSS3实现动态页面</dd>
             </dt>
         </dl>
     </div>
     <div class="rside">
        <dl>
         <dt>相关课程
                 <dd>HTML&nbsp;CSS&nbsp;JavaScript</dd>
                 <dd>HTML&nbsp;CSS&nbsp;JavaScript</dd>
                 <dd>HTML&nbsp;CSS&nbsp;JavaScript</dd>
                </dt>
             </dl>
     </div>
 </div>
 <div class="foot">
     <ul>
         <li>网站首页</li>
         <li>企业合作</li>
         <li>人才招聘</li>
         <li>联系我们</li>
         <li>常见问题</li>
         <li>友情链接</li>
     </ul>
 </div>

</body>
</html>

慕尼黑4757019
浏览 805回答 1
1回答

qq_沉心_0

因为.foot里面的ul是块级元素
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