【C021070】请根据下面的HTML和CSS代码，画出布局示意图

<div id="page">

    <div class="main">

        <div class="sub"></div>

    </div>

    <div class="nav"></div>

</div>

<style type="text/css">

    #page { width: 520px; }

    .nav  { width: 200px; float: right; }

    .main { width: 200px; float: left; padding-left: 110px; }    

    .sub  { width: 100px; float: left; margin: 10px 0 10px -100px; }    

    .main { border: 1px solid #000; }

    .nav, .sub { border: 1px dashed #000; height: 300px; }    

    .sub { height: 280px; }

</style>