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<p style=border-style:none>无边框</p>
<p style=border-style:dotted>点线式边框</p>
<p style=border-style:dashed>破折线式边框</p>
<p style=border-style:solid>直线式边框</p>
<p style=border-style:double>双线式边框</p>
<p style=border-style:groove>槽线式边框</p>
<p style=border-style:ridge>脊线式边框</p>
<p style=border-style:inset>内嵌效果的边框</p>
<p style=border-style:outset>突起效果的边框</p>
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原文：http://www.cnblogs.com/xiaoyunyun/p/4949892.html