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<h2>自适应宽度按钮</h2>
<a href="" title="nogo"><span>自适应</span></a>
<a href="" title="nogo"><span>自适应宽度</span></a>
<a href="" title="nogo"><span>自适应宽度,对吧!</span></a>
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相关CSS设计圆角自适应按钮教程