整理了一下之前用到过的css代码，实现一种效果或许有许多种写法，我这里整理了一下我个人认为兼容性比较好，结构比较简洁的代码……如有写得不对的地方敬请前辈们指点赐教一下，小弟不胜感激！此学习笔记是动态的——我日后发现有好的代码段会陆陆续续整理添加上去。
css:ellipsis省略号
<style>.news{width:320px; text-overflow:ellipsis; -o-text-overflow:ellipsis; -moz-binding:url('ellipsis.xml#ellipsis'); -ms-text-overflow:ellipsis; -webkit-text-overflow:ellipsis; overflow:hidden;}.news a{white-space:nowrap;}</style> <div class="news"> <a href="javascript:void(0);">你好，我是个css省略号，支持各种浏览器，包括大IE6</a> <a href="Javascript:void(0);">你好，我是个css省略号，支持各种浏览器，包括大IE6</a></div>鼠标移过去图片慢慢变暗（亮）一点
也就是用到了透明（opacity），渐变（transition）实现，如下是变暗的情况:
<style>.link_img{display:inline-block; width:auto; height:auto;}.link_img:hover{ background-color:#000;}.link_img:hover img{ display:block; filter:alpha(opacity=80); opacity:0.8; transition:all 0.5s ease-out; -webkit-transition:all 0.5s ease-out; -moz-transition:all 0.5s ease-out; -o-transition:all 0.5s ease-out;}</style><a href="javascript:void(0);" class="link_img"><img src="images/zy_19.jpg" /></a><a href="javascript:void(0);" class="link_img"><img src="images/PRo3.jpg" /></a>css:border实现的三角形
如要实现汽包，如新浪微博里的
，新浪里用到的是的是特殊字符“◆”，
，能实现兼容到IE6，html代码结构上不简洁了，在html里要多写了class为”WB_arrow“的一层代码，如图：
要简洁点，只能用border与伪类before，after了，附代码如下：
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http ://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title>css制作三角形</title> 6 <style type="text/css"> 7 body{background-color:#E8E8E8;} 8 .triangle1{ display:inline-block; width:20px; height:20px; border-width:20px 30px 40px 50px; border-style:solid; border-color:green yellow blue red;} 9 .triangle2{ display:inline-block; width:0; height:0; border-width:20px 30px 40px 50px; border-style:solid; border-color:transparent yellow blue red;}10 .triangle3{ display:inline-block; width:0; height:0; border-width:20px 30px 40px 50px; border-style:dashed solid solid solid; border-color:transparent yellow blue red;}11 .triangle4{ display:inline-block; width:0; height:0; _line-height:0; border-width:20px 30px 40px 50px; border-style:dashed solid solid solid; border-color:transparent yellow blue red;}/*对于ie6要设置一下line-height，以及透明的border-style要设置成dashed*/12 13 .rightdirection{ display:inline-block; width:0;height:0; _line-height:0; border-width:20px; border-style:dashed dashed dashed solid; border-color:transparent transparent transparent #333; } 14 .bottomdirection{ display:inline-block; width:0;height:0; border-width:20px; border-style:solid dashed dashed dashed; border-color: #333 transparent transparent transparent; } 15 .leftdirection{ display:inline-block; width:0;height:0; _line-height:0; border-width:20px; border-style:dashed solid dashed dashed; border-color: transparent #333 transparent transparent; } 16 .topdirection{ display:inline-block; width:0;height:0; border-width:20px; border-style:dashed dashed solid dashed; border-color: transparent transparent #333 transparent; } 17 18 .dome{ margin-top:10px; width:200px; padding:10px; text-align:center; background-color:#ccc; border:1px solid #666; position:relative; left:30px;}19 .dome:before{ display:block; content:""; border-width:8px 10px; border-style:dashed solid dashed dashed; border-color:transparent #666 transparent transparent; position:absolute; top:10px; left:-20px; z-index:1; }20 .dome:after{ display:block; content:""; border-width:8px 10px; border-style:dashed solid dashed dashed; border-color:transparent #ccc transparent transparent; position:absolute; top:10px; left:-19px; z-index:2;}21 </style> 22 </head>23 <body>24 <em class="triangle1"></em>25 <em class="triangle2"></em>26 <em class="triangle3"></em>27 <em class="triangle4"></em>28 29 <em class="rightdirection"></em>30 <em class="bottomdirection"></em>31 <em class="leftdirection"></em>32 <em class="topdirection"></em>33 34 <div class="dome">hello world</div>35 </body>36 </html>View Code运行结果如下图：
IE6的截图：
但是用伪类before，after的border在大IE6里不能做出三角形来，如要兼容IE6还得用新浪里的方法，或者用与新浪的相似，不过不是用特殊字符，而是也是用border做三角形，如下：
1 <style> 2 .dome{width:300px; padding:30px 20px; border:1px solid #beceeb; position:relative;} 3 .dome .triangle{ position:absolute; bottom:0px; left:50px;} 4 .dome .triangle .bot{ 5 _display:block; 6 _line-height:0px; 7 border-width:20px; 8 border-style:solid dashed dashed dashed; 9 border-color:#beceeb transparent transparent transparent;10 position:absolute;11 bottom:-40px;12 }13 .dome .triangle .top{14 _display:block;15 _line-height:0px;16 border-width:20px; 17 border-style:solid dashed dashed dashed; 18 border-color:#FFF transparent transparent transparent;19 position:absolute;20 bottom:-39px; 21 } 22 </style>23 24 <div class="dome">25 <div class="triangle">26 <em class="bot"></em>27 <em class="top"></em>28 </div>29 <div class="txtBox">30 我是用border实现的三角形，html结构上跟新浪微博上的结构相似31 </div>32 </div>新闻热点
疑难解答
