页面布局之--内容区域的左右分居

页面布局之内容区域的左右分居内容

overflow: auto; 控制左侧菜单是否固定
min- 980px; 控制当页面小于980px时出现滚动条
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body{
            margin: 0;
        }
        .left{
            float: left;
        }
        .right{
            float: right;
        }
        .pg-header{
            height: 48px;
            background-color: #2459a2;
            color: white;
            min- 1180px;
        }
        .pg-content .menu{
            position: absolute;
            top: 48px;
            left: 0;
            bottom: 0;
             200px;
            background-color: #cccccc;
        }
        .pg-content .content{
            position: absolute;
            top: 48px;
            right:0;
            bottom: 0;
            left: 200px;
            background-color: #000795;
            /*min- 980px; 该项为页面缩小980px时出现滚动条，不会影响页面布局*/
            min- 980px;

            /*overflow: auto; 添加该项时，左侧内容框固定不动，去除后左侧会跟随滚动条上移*/
            overflow: auto;
        }

    </style>
</head>
<body>
    <div class="pg-header"></div>
    <div class="pg-content">
        <div class="menu left">
            a
        </div>

        <div class="content left">
            <div style="background-color: #000795">
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            </div>
        </div>
    </div>
    <div class="pg-footer"></div>
</body>
</html>