[css]后台管理系统布局

知识点:

绝对定位+overflowhidden

整体思路

三大块

pg-header---需要固定 (height:48px)

pg-content

menu 右侧菜单-需要固定(200px; top:48;left:0; bottom:0;)

content---当内容较多时候需要有滚动条(top:48;left:200px;right:0; bottom:0; overflow: auto;)

pg-footer

关键技术:

position绝对定位

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>后台管理</title>
    <style>
        .fl {
            float: left;
        }

        .fr {
            float: right;
        }

        body {
            margin: 0;
        }

        .pg-header {
            margin: 0 auto;
            height: 48px;
            background-color: black;
        }

        .pg-content .menu {
            width: 200px;
            position: fixed;
            top: 48px;
            left: 0;
            bottom: 0;
            background-color: bisque;
        }

        .pg-content .content {
            position:

fixed

; top: 48px; left: 200px; right: 0; bottom: 0; overflow: auto; } </style> </head> <body> <div class="pg-header"></div> <div class="pg-content"> <div class="menu fl">a</div> <div class="content fr"> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> <p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p><p>hi cristna</p> </div> </div> <div class="pg-footer"></div> </body> </html>