CSS实现带有三角小箭头的矩形效果:
现在比较流行带有小箭头的矩形效果，比如鼠标放上去弹出的提示效果，还有微信类似的对话内容等，从视觉上较为美观，也比较人性化，如果是CSS3的话比较容易实现，但是当前还存在着很大的浏览器兼容性，下面介绍一种能够兼容所有的浏览器的代码。
代码如下:
<!DOCTYPE html><html><head><meta charset=" utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style>.w { width:200px; position:absolute; background:#999; left:400px; top:200px; font-size:12px; text-align:left}.x { width:180px; position:relative; background:#ff9; border:1px solid #F96; padding:10px; left:-4px; top:-4px;}.y, .z { position:absolute; left:130px;}.y { color:#ff9; top:-6px;}.z { color:#f96; top:-7px;}</style></head><body><div class="w"> <div class="x"> <p>蚂蚁部落欢迎您</p> <div class="z">◆</div> <div class="y">◆</div> </div></div></body></html>
原文地址是:http://www.softwhy.com/forum.php?mod=viewthread&tid=11571
更多内容可以参阅:http://www.softwhy.com/divcss/
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