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實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<html>
<head>
    <title>W3.CSS(w3cschool.cn)</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://7npmedia.w3cschool.cn/w3.css">
</head>
<body>
    <div class="w3-container w3-round w3-border">
            <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">伦敦是英国人口最多的城市，拥有超过900万居民。</font></font></p>
    </div><br>
    <div class="w3-container w3-light-grey w3-border">
        <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">伦敦是英国人口最多的城市，拥有超过900万居民。</font></font></p>
    </div><br>
    <div class="w3-container w3-pale-red w3-leftbar w3-border-red">
        <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">伦敦是英国人口最多的城市，拥有超过900万居民。</font></font></p>
    </div><br>
    <div class="w3-container w3-pale-green w3-bottombar w3-border-green w3-border">
        <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">伦敦是英国人口最多的城市，拥有超过900万居民。</font></font></p>
    </div><br>
    <div class="w3-container w3-leftbar w3-sand">
        <p><i class="w3-xlarge w3-serif"><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">“使它尽可能简单，但不要简单。”</font></font></i></p>
        <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">艾尔伯特爱因斯坦</font></font></p>
    </div><br>
</body>
</html>
 
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運行結(jié)果