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<h1 class=".subheader">菜鸟教程</h1>
<p>重置窗口大小，查看效果</p>
<button type="button" class="button small">我是按钮</button>
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<div class="row">
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<h3 >菜鸟教程</h3>
<p>学的不仅是技术，更是梦想！！！</p>
</div>
<div class="medium-4 columns">
<h3>菜鸟教程</h3>
<p>学的不仅是技术，更是梦想！！！</p>
</div>
<div class="medium-4 columns">
<h3>菜鸟教程</h3>
<p>学的不仅是技术，更是梦想！！！</p>
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</div>
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