一个小页面示例，margin与float的应用

margin: 0 auto 生效条件，需要设置到当前div，那么当前div相对于父div就是居中的

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .pg-header{
            height: 38px;
            background-color: #dddddd;
            line-height: 38px;
        }
    </style>
</head>
<body style="margin: 0">
    <div class="pg-header">
        <div style="width: 980px;margin: 0 auto;">
            <div style="float: left;">收藏本站</div>
            <div style="float: right;">
                <a>登录</a>
                <a>注册</a>
            </div>
            <div style="clear: both"></div>
        </div>
    </div>
    <div>
        <div style="width: 980px;margin: 0 auto;">
            <div style="float: left">
                Logo
            </div>
            <div style="float: right">
                <div style="height: 50px;width: 100px;background-color: #dddddd"></div>
            </div>
            <div style="clear: both"></div>
        </div>
    </div>
    <div style="background-color: red;">
         <div style="width: 980px;margin: 0 auto;">
             asdfsdf
         </div>
    </div>
    <div style="width: 300px;border: 1px solid red;">
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="width: 96px;height:30px;border: 1px solid green;float: left;"></div>
        <div style="clear: both;"></div>
    </div>
</body>
</html>

 

posted @ 2018-04-04 00:15  梦中琴歌  阅读(146)  评论(0)    收藏  举报