CSS重置标签默认样式:
建议:尽可能的手写代码，可以有效的提高学习效率和深度。
在默认情况下，很多标签都有自带的属性，例如body自带有margin、ul有自带的padding、h1-h6的字体大小各部相同、li前面带有的小圆圈等等。这些自带的默认属性会给实际的布局中带来不少的麻烦，我们可以再样式表的开始就重置这些默认的属性。实例如下:
<!DOCTYPE html><html><head><meta charset=" utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style type="text/css">body, ul, li, h1, h2, h3, h4, h5, h6, p{ margin:0px; padding:0px; list-style:none; font-size:12px; font-weight:normal;}</style></head><body><h1>标题一</h1><h2>标题二</h2><h3>标题三</h3><h4>标题四</h4><h5>标题五</h5><h6>标题六</h6><ul> <li>列表项一</li> <li>列表项二</li></ul><p>我是一个段落</p></body></html>原文地址是:http://www.softwhy.com/forum.php?mod=viewthread&tid=4736
更多内容可以参阅:http://www.softwhy.com/divcss/
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