App下載
實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style>
    div.container
    {
        width:100%;
        margin:0px;
        border:1px solid gray;
        
    }
    div.header,div.footer
    {
        padding:0.5em;
        color:white;
        background-color:gray;
        clear:left;
    }
    h1.header
    {
        padding:0;
        margin:0;
    }
    div.left
    {
        float:left;
        width:160px;
        margin:0;
        padding:1em;
    }
    div.content
    {
        margin-left:190px;
        border-left:1px solid gray;
        padding:1em;
 
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