http://www.knowsky.com/article.asp?typeid=38 CSS教程 rss zh-cn Copyright 2000-2009 www.knowsky.com http://www.knowsky.com/538314.htmlwww.knowsky.comCSS教程2009-09-21 <p><a href="http://feedads.g.doubleclick.net/~a/Q4UdgPe475S4iKePG6IgrXAJrhA/0/da"><img src="http://feedads.g.doubleclick.net/~a/Q4UdgPe475S4iKePG6IgrXAJrhA/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/Q4UdgPe475S4iKePG6IgrXAJrhA/1/da"><img src="http://feedads.g.doubleclick.net/~a/Q4UdgPe475S4iKePG6IgrXAJrhA/1/di" border="0" ismap="true"></img></a></p>　　网页设计中CSS布局是很重要的部分，下面介绍几种检查调试CSS布局的有效方法。 　　1. 检查HTML元素是否有拼写错误、是否忘记结束标记 　　即使是老手也经常会弄错div的嵌套关系。可以用.....<a href='http://www.knowsky.com/538314.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/538167.htmlwww.knowsky.comCSS教程2009-09-14 <p><a href="http://feedads.g.doubleclick.net/~a/50CPZeDyFj1cCMl-K9-8_Mfw074/0/da"><img src="http://feedads.g.doubleclick.net/~a/50CPZeDyFj1cCMl-K9-8_Mfw074/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/50CPZeDyFj1cCMl-K9-8_Mfw074/1/da"><img src="http://feedads.g.doubleclick.net/~a/50CPZeDyFj1cCMl-K9-8_Mfw074/1/di" border="0" ismap="true"></img></a></p>white-space -- 通过HTML文档的源代码的排版方式控制页面显示文本的排版方式 取值: normal | pre | nowrap | pre-wrap | pre-line | i.....<a href='http://www.knowsky.com/538167.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/537529.htmlwww.knowsky.comCSS教程2009-08-10 <p><a href="http://feedads.g.doubleclick.net/~a/WJj3wz83aYk1_ZOHsJdZE_N3s1U/0/da"><img src="http://feedads.g.doubleclick.net/~a/WJj3wz83aYk1_ZOHsJdZE_N3s1U/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/WJj3wz83aYk1_ZOHsJdZE_N3s1U/1/da"><img src="http://feedads.g.doubleclick.net/~a/WJj3wz83aYk1_ZOHsJdZE_N3s1U/1/di" border="0" ismap="true"></img></a></p>对于CSS定义&lt;hr /&gt;水平线标签，常用的有以下几种样式，仅供参考。对于&nbsp;程序代码height:1px;border:none;的主要用途就是Css Reset，关于Css .....<a href='http://www.knowsky.com/537529.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/537309.htmlwww.knowsky.comCSS教程2009-07-30 <p><a href="http://feedads.g.doubleclick.net/~a/0hYp_Mvxlj1Ezy09Jc6n8mvHXa0/0/da"><img src="http://feedads.g.doubleclick.net/~a/0hYp_Mvxlj1Ezy09Jc6n8mvHXa0/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/0hYp_Mvxlj1Ezy09Jc6n8mvHXa0/1/da"><img src="http://feedads.g.doubleclick.net/~a/0hYp_Mvxlj1Ezy09Jc6n8mvHXa0/1/di" border="0" ismap="true"></img></a></p>&nbsp;&nbsp;&nbsp; 1. 检查HTML元素是否有拼写错误、是否忘记结束标记&nbsp;&nbsp;&nbsp; 即使是老手也经常会弄错div的嵌套关系。可以用dreamweaver.....<a href='http://www.knowsky.com/537309.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/537232.htmlwww.knowsky.comCSS教程2009-07-26 <p><a href="http://feedads.g.doubleclick.net/~a/knjaUzOTfZCc1AY5UyXgTM24gTk/0/da"><img src="http://feedads.g.doubleclick.net/~a/knjaUzOTfZCc1AY5UyXgTM24gTk/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/knjaUzOTfZCc1AY5UyXgTM24gTk/1/da"><img src="http://feedads.g.doubleclick.net/~a/knjaUzOTfZCc1AY5UyXgTM24gTk/1/di" border="0" ismap="true"></img></a></p>自动换行问题,正常字符的换行是比较合理的,而连续的数字和英文字符常常将容器撑大,挺让人头疼,下面介绍的是CSS如何实现换行的方法 对于div,p等块级元素 正常文字的换行(亚洲文字和非亚洲文字)元.....<a href='http://www.knowsky.com/537232.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/536956.htmlwww.knowsky.comCSS教程2009-07-13 <p><a href="http://feedads.g.doubleclick.net/~a/IYjTTNanO35HHsTDmvUGuXjdktY/0/da"><img src="http://feedads.g.doubleclick.net/~a/IYjTTNanO35HHsTDmvUGuXjdktY/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/IYjTTNanO35HHsTDmvUGuXjdktY/1/da"><img src="http://feedads.g.doubleclick.net/~a/IYjTTNanO35HHsTDmvUGuXjdktY/1/di" border="0" ismap="true"></img></a></p>今天学习使用 CSS3 技术不需要图片即可实现圆角，把侧边栏标题背景的圆角效果和搜索框的圆角效果用 CSS3 实现。记录一下以便以后使用。W3C 很早就制订了实现了 CSS 圆角的 CSS3 属性：.....<a href='http://www.knowsky.com/536956.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/536905.htmlwww.knowsky.comCSS教程2009-07-10 <p><a href="http://feedads.g.doubleclick.net/~a/8MvZJcSs6XOcizJoMX1lca4m-pY/0/da"><img src="http://feedads.g.doubleclick.net/~a/8MvZJcSs6XOcizJoMX1lca4m-pY/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/8MvZJcSs6XOcizJoMX1lca4m-pY/1/da"><img src="http://feedads.g.doubleclick.net/~a/8MvZJcSs6XOcizJoMX1lca4m-pY/1/di" border="0" ismap="true"></img></a></p>一般我们可以使用背景图的方式给图片添加阴影，但对于不固定尺寸的图片如何实现呢？我们可以采取“视觉欺骗大法”——定义渐变边框来实现： &lt;!DOCTYPE html PUBLIC "-//W3C.....<a href='http://www.knowsky.com/536905.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/536882.htmlwww.knowsky.comCSS教程2009-07-09 <p><a href="http://feedads.g.doubleclick.net/~a/MTSjKhet81i18nog_EA88a2SBSM/0/da"><img src="http://feedads.g.doubleclick.net/~a/MTSjKhet81i18nog_EA88a2SBSM/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/MTSjKhet81i18nog_EA88a2SBSM/1/da"><img src="http://feedads.g.doubleclick.net/~a/MTSjKhet81i18nog_EA88a2SBSM/1/di" border="0" ismap="true"></img></a></p>　　关于新发布的IE8，网友们都纷纷下载来使用，尝到了功能强大的甜头；有的却因网络流传：安装后会覆盖原来的IE7，并且不能导入IE7的收藏夹的虚假消息。而使大家（特别是工作用的电脑）不敢尝试这新版的.....<a href='http://www.knowsky.com/536882.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/536825.htmlwww.knowsky.comCSS教程2009-07-07 <p><a href="http://feedads.g.doubleclick.net/~a/0CgiZWGxech3-RwK0RulC3Kq8hw/0/da"><img src="http://feedads.g.doubleclick.net/~a/0CgiZWGxech3-RwK0RulC3Kq8hw/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/0CgiZWGxech3-RwK0RulC3Kq8hw/1/da"><img src="http://feedads.g.doubleclick.net/~a/0CgiZWGxech3-RwK0RulC3Kq8hw/1/di" border="0" ismap="true"></img></a></p>　　Styleneat 能够把 CSS 的选择器（selectors），子选择器（ sub-selectors）和属性（properties）按照层式结构化重新组织，这样使得程序员更加容易去定义页面.....<a href='http://www.knowsky.com/536825.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>http://www.knowsky.com/536755.htmlwww.knowsky.comCSS教程2009-07-03 <p><a href="http://feedads.g.doubleclick.net/~a/xw5roFzVbaYJoQ-i_ZITLoFzjZ8/0/da"><img src="http://feedads.g.doubleclick.net/~a/xw5roFzVbaYJoQ-i_ZITLoFzjZ8/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/xw5roFzVbaYJoQ-i_ZITLoFzjZ8/1/da"><img src="http://feedads.g.doubleclick.net/~a/xw5roFzVbaYJoQ-i_ZITLoFzjZ8/1/di" border="0" ismap="true"></img></a></p>因为垂直居中的主要问题出在IE系列上，因此用到了IE的条件注释、IE8的兼容视图，还算完美解决了目前所有的主流浏览器的CSS实现DIV内容垂直及水平居中问题，IE5.5，IE6，IE7，IE8，Fi.....<a href='http://www.knowsky.com/536755.html'>点击浏览详细内容</a><br/><br/>-------------------------------------<br/>导航:<a href='http://www.knowsky.com/developer.asp' target='_blank'>编程</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/zhanzhang.asp' target='_blank'>站长</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/web.asp' target='_blank'>网页</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/photo.asp' target='_blank'>图形</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/system.asp' target='_blank'>系统</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/internet.asp' target='_blank'>冲浪</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/qq.asp' target='_blank'>QQ</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/soft.asp' target='_blank'>软件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/office.asp' target='_blank'>办公</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/shoujixueyuan.asp' target='_blank'>手机</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/mailserver.asp' target='_blank'>邮件</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/networksecurity.asp' target='_blank'>安全</a>&nbsp;&nbsp;<a href='http://www.knowsky.com/exam.asp' target='_blank'>认证</a>