后台界面布局

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>后台界面布局</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        .wrap {
            min-width: 100%;
            position: absolute;
            min-height: 100%;
            overflow: hidden;
        }
        .head-div {
            position: absolute;
            box-sizing: border-box;
            width:100%;
            height: 70px;
            line-height: 70px;
            background-color: #1299ff;
            min-width: 824px !important;
            z-index:3;
        }
        .left-div {
            position: absolute;
            box-sizing: border-box;
            width: 150px;
            height: 100%;
            padding-top: 70px;
            background: #4d5e70 bottom;
            z-index:2;
        }
        .body-div {
            position: absolute;
            box-sizing: border-box;
            width: 100%;
            height: 100%;
            background-color: #00ff21;
            padding-left: 150px;
            padding-top: 70px;
            min-width: 824px !important;
            z-index:1;
        }
    </style>
</head>
<body>
    <div class="wrap">
        <div class="head-div">head</div>
        <div class="left-div">left</div>
        <div class="body-div">boby</div>
    </div>
</body>
</html>
效果如下：