CSS 清除默认样式 通常的清除默认样式: *{ margin:0; padding:0 } li{ list-style:none } img{ vertical-align:top; border:none } 设置默认字体 body, button, input, select, textarea /* for ie */ { font: 14px/1.5 tahoma, \5b8b\4f53, sans-serif; } h1, h2, h3, h4, h5, h6 { font-size: 100%; font-weight: no